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Repeat retroperitoneal lymph node dissection for metastatic testis cancer.

PURPOSE: We report pathological results, perioperative complications and patient outcome in 21 men after repeat retroperitoneal lymph node dissection for metastatic testis cancer. MATERIALS AND METHODS: We reviewed an institutional tumor registry at our cancer center and identified 417 patients who underwent retroperitoneal lymph node dissection for testis cancer during a 21-year period. Of these 417 patients 21 underwent repeat retroperitoneal lymph node dissection. We reviewed preoperative patient characteristics, operative data and pathological findings from repeat lymphadenectomy, and determined patient disease status, morbidity and mortality after surgery. RESULTS: We identified viable germ cell tumor in 5 patients (24%), teratoma in 14 (67%) and fibrosis or necrosis only in 5 (24%). Intraoperatively subadventitial dissection of the aorta occurred in 2 cases, which was severe enough in 1 to require an aortic graft. The most common postoperative complications were prolonged ileus or partial bowel obstruction and chylous ascites in 6 and 3 patients, respectively. Six patients died, including 5 of disease progression and 1 of postoperative pulmonary embolus. At a mean followup of 4.7 years (range 0.1 to 14) 15 patients (71%) were alive and 14 (67%) were disease-free. CONCLUSIONS: Repeat retroperitoneal lymph node dissection is safe and effective in the majority of patients with recurrent or residual retroperitoneal masses after initial multimodality treatments for metastatic testis cancer. Overall perioperative morbidity and mortality are low and yet the potential for significant vascular complications warrants careful preoperative planning and intraoperative judgment.

Adolescent↗

En bloc nephrectomy in patients undergoing post-chemotherapy retroperitoneal lymph node dissection for nonseminomatous testis cancer: indications, implications and outcomes.

PURPOSE: We review the indications for nephrectomy at post-chemotherapy retroperitoneal lymph node dissection, identify patients at risk for nephrectomy and assess the impact of nephrectomy on outcome. MATERIALS AND METHODS: Using a computerized data base and chart review we retrospectively reviewed the records of 848 patients who underwent retroperitoneal lymph node dissection after chemotherapy. RESULTS: En bloc nephrectomy was performed at retroperitoneal lymph node dissection after chemotherapy in 162 of the 848 patients (19%). The indications for nephrectomy included contiguous involvement of perirenal structures in 73% of the cases, renal vein thrombosis in 6%, a poorly functioning or nonfunctioning renal unit in 5% and a combination of these conditions in 16%. Pathological studies of the hilum revealed cancer in 20% of the cases, teratoma in 49% and fibrosis in 31%. Patients requiring nephrectomy had significantly more advanced disease and larger disease volume at presentation and after chemotherapy. There were no significant differences in perioperative morbidity or mortality compared with patients who did not undergo nephrectomy. Only 3 patients required perioperative dialysis and none required long-term renal support. CONCLUSIONS: These findings support en bloc nephrectomy at post-chemotherapy retroperitoneal lymph node dissection in select patients with large volume perihilar retroperitoneal disease.

Adult↗

Current status of retroperitoneal lymph node dissection and testicular cancer: when to operate.

BACKGROUND: Historically, retroperitoneal lymph node dissection (RPLND) has been used in the therapy of both low-stage and high-stage testicular cancer after chemotherapy. As other therapies have developed, the role of RPLND has also evolved. METHODS: The authors review the current indications for RPLND in the therapy of testicular cancer. RESULTS: Metastatic testicular cancer can be cured in 50% to 75% of cases by surgical removal using RPLND, depending on the volume of metastasis. In postchemotherapy disease, the surgical removal of teratoma or carcinoma also confers a therapeutic benefit to the patient. CONCLUSIONS: The therapeutic capability of RPLND in low-stage testicular cancer is underappreciated. In postchemotherapy disease, this therapeutic capability is retained if the patient has carcinoma or teratoma in the metastatic tumor. In postchemotherapy disease, efforts continue to appropriately select patients preoperatively who have only fibrosis and necrosis in the specimen and therefore do not derive therapeutic benefit from RPLND.

Humans↗

Complications of retroperitoneal lymph node dissection in testicular cancer: primary and post-chemotherapy.

Retroperitoneal lymph node dissection (RPLND) is utilized in low-stage testis cancer as a primary diagnostic and therapeutic procedure. In the post-chemotherapy setting, it serves as an adjuvant procedure to resect residual tumor. Primary RPLND entails minimal resection of lymphatic tissue in the retroperitoneum; the complications are minor and insignificant. Wound infection is the main complication, affecting less than 5% of patients. Atelectasis and small bowel obstruction may occur in less than 2% of patients. In post-chemotherapy RPLND, the template and the surgical challenge are much larger. Extensive tumor size, difficult location, adherence to major vessels, and vital structures, together with inferior pre-operative status, are probably the main reasons for complications. The overall complication rate is 20% to 35% and mortality is 0.8% to 1%. Pulmonary insufficiency secondary to bleomycin-induced interstitial fibrosis is the cause of the most severe side effects and mortality in these operations. Chylous ascites may occur, especially where resection of the inferior vena cava is necessary. Other complications occur to a lesser extent. A summary of all complications is presented and measures to avoid or manage them are depicted.

Antineoplastic Combined Chemotherapy Protocols↗

Laparoscopic retroperitoneal lymph node dissection for nonseminomatous germ cell tumors: indications and limitations.

PURPOSE: We describe our experience with laparoscopic retroperitoneal lymph node dissection in 26 patients with nonseminomatous germ cell tumors: 17 had stage I disease with no clinical (computerized tomography, ultrasound or tumor markers) evidence of metastases and 9 (2 with stage IIb and 7 with stage IIc disease) had residual tumor after chemotherapy but with negative tumor markers. Laparoscopic dissection was performed to assess more fully pathological status of the relevant retroperitoneal lymph nodes in both groups. MATERIALS AND METHODS: The patient was positioned and trocars were introduced at sites similar to that used for transperitoneal laparoscopic nephrectomy (flank position with 3, 10 mm. and 2, 5 mm. ports). After the white line of Toldt was incised and the colon was reflected anteromedially, the retroperitoneal space was exposed. The landmarks of lymph node dissection were then isolated, including the ureter, aorta, inferior vena cava and both renal veins. Lymph node dissection was performed identical to that for open surgery, with a modified template including the paracaval, interaortocaval, upper preaortic and right common iliac nodes for right tumors, and para-aortic and upper preaortic nodes for left tumors. Lymph node chains were retrieved with a small organ bag. RESULTS: The procedure was completed successfully in 16 of 17 patients with stage I disease (mean duration 268 minutes for the left and 312 minutes for the right sides). No intraoperative complications were encountered. One patient had delayed ureteral stenosis requiring operative repair, 1 had a pulmonary embolism with an uneventful outcome and 1 who underwent laparoscopic retroperitoneal lymph node dissection on the right side later had retrograde ejaculation. Embryonal carcinoma was found in 1 of the 17 patients. Average postoperative hospital stay was 4.5 days for patients without complications or conversion to an open procedure. After a median followup of 27 months no patient had regional relapse but 2 had pulmonary metastases that were treated successfully with 3 cycles of platinum based chemotherapy. Laparoscopic dissection was significantly more difficult in patients with stage II tumors after chemotherapy. Only in 2 patients with stage IIb disease was laparoscopic lymphadenectomy successful. In 5 of the 7 patients with stage IIc cancer portions of the dissection had to be done after conversion to an open (conventional) operation via a small incision (suprainguinal or pararectal). In 1 patient the laparoscopic approach was completely abandoned and converted to an open operation via a standard midline incision. In all 9 cases histopathological examination revealed complete necrosis. No patient has evidence of disease. CONCLUSIONS: Our preliminary experience suggests that a modified laparoscopic retroperitoneal lymph node dissection is feasible for stage I tumors. However, it cannot be recommended after previous chemotherapy (stages IIb and IIc disease).

Follow-Up Studies↗

[Clinical study of retroperitoneal lymph node dissection for patients with advanced germ cell tumors].

We performed retroperitoneal lymph node dissection (RPLND) on 14 patients (IIA: 1, IIB: 4, IIIA: 3, IIIB2: 2, IIIC: 4) with testicular and one with retroperitoneal germ cell tumor at the Nagoya University Hospital between 1986 and 1997. According to the international germ cell consensus classification, 4 patients were classified as "good-prognosis", three as "intermediate-prognosis" and eight as "poor-prognosis". RPLND was performed on 12 patients with the tumor marker levels normalized preoperatively and on three without the marker normalization. The mean surgical time was 510 (195-1, 125) minutes and the mean bleeding volume was 3,806 (100-12,598) g. The surgical time and bleeding volume were correlated with the size of the tumor in the body axis. Intraoperative complications occurred in 5 (33%) out of 15 patients: injury of renal artery (2), renal vein (1), ureter (1) and common iliac artery (2). Postoperative complications occurred in 2 patients: ileus (2) and lower extremity edema resulting from resection of the inferior vena cava (1) and would dehiscence (1). Of the 8 patients whose completely resected retroperitoneal tumors were necrosis/fibrosis or teratoma (psCR), 6 achieved survival with no evidence of disease (NED). Among 4 patients, whose tumor was not completely resected but pathologically diagnosed as necrosis/fibrosis or teratoma (pCR), NED without recurrence was achieved in 2 and also in one with resection of relapsed teratoma 2.5 years after RPLND. All three patients with cancer tissues pathologically retained in the resected tumors (sCR or psIR), consequently died of the disease. In six patients with relapse, the initial sign was elevation of the tumor marker levels, which was noted more than 30 days postoperatively in 2 patients with psCR and 7 to 15 days in 4 patients without psCR. We believe that RPLND is needed to examine the pathology and to predict the prognosis of the poor-risk patients with NSGCT. Careful dissection of vessels is needed to reduce vascular complications.

Adolescent↗

A 7-year audit in a single centre of the results of the modified template retroperitoneal lymph node dissection for testicular teratoma.

OBJECTIVE: To audit the results of retroperitoneal lymph node dissection (RPLND) after chemotherapy for testicular nonseminomatous germ cell tumour (NSGCT) in a single centre over a 7-year period, using a modified template technique via a midline transabdominal approach. PATIENTS AND METHODS: Outcome data were collected prospectively on all patients undergoing RPLND for a residual retroperitoneal mass after chemotherapy for NSGCT between October 1990 and March 1998; 28 patients underwent 32 RPLNDs over this period. RESULTS: The clinical stage at presentation was stage I in three patients (12%), stage II in 15 (54%), stage III in one (4%) and stage IV in nine (32%). The histological classification included malignant teratoma differentiated in one patient, malignant teratoma intermediate in 12 (43%) and malignant teratoma undifferentiated in 12. Tumour markers were positive immediately before surgery in four patients. A midline transabdominal approach was used in 31 of the procedures. The size of the retroperitoneal tumour mass was <3 cm in four patients (13%), 4-8 cm in 16 (50%) and >9 cm in 12 (38%). Histology of the mass showed residual differentiated teratoma in 17 (53%), undifferentiated teratoma in six (19%), necrosis only in six (19%), adenocarcinoma in one and angiosarcomatous differentiation in two. There was no perioperative mortality. Eight patients had permanent loss of ejaculation (29%) and two had erectile dysfunction (7%). Five patients (20%) subsequently developed recurrent disease; three (12%) underwent reoperation for disease relapse (one requiring two further procedures), whilst two (8%) died from recurrent disease. CONCLUSION: An abdominal approach via a midline incision provides satisfactory access with minimal morbidity in most patients. Results comparable with larger series can be achieved in regional centres.

Adolescent↗

Peritoneal venous shunting for the treatment of lymphatic ascites following retroperitoneal lymph node dissection.

We report a case of refractory lymphatic ascites following retroperitoneal lymph node dissection and venacavectomy. Placement of a Denver peritoneal venous shunt resulted in resolution of the ascites and marked improvement in the patient's nutritional parameters. Shunt occlusion 2 months following placement demonstrated no recurrence of the ascites. This technique may prove useful in the management of lymphatic ascites associated with radical retroperitoneal surgery.

Adult↗

Laparoscopic retroperitoneal lymph node dissection: description of the nerve-sparing technique.

INTRODUCTION: Laparoscopic retroperitoneal lymph node dissection (RPLND) is associated with a more favorable postoperative recovery and decreased morbidity compared with open RPLND. To date, laparoscopic RPLND is used as a diagnostic tool for patients with clinical Stage I nonseminomatous germ cell tumor and as a diagnostic and therapeutic tool for patients with low-volume Stage II nonseminomatous germ cell tumor after chemotherapy. In an effort to further expand the therapeutic implications for laparoscopic RPLND, we describe a nerve-sparing technique for laparoscopic RPLND. TECHNICAL CONSIDERATIONS: In all cases, a four-port transperitoneal approach was used to perform a unilateral nerve-sparing technique. Laparoscopic nerve-sparing RPLND requires complete exposure of the retroperitoneum, similar to the standard procedure. A stepwise surgical approach is required for prospective identification of the sympathetic trunk and postganglionic nerve fibers. Identification and division of the lumbar veins is required for complete mobilization of the vena cava to facilitate dissection of the postganglionic nerves on the right side as they course dorsal to the vena cava. Meticulous dissection was required for preservation of the postganglionic nerves in the interaortocaval and para-aortic regions. CONCLUSIONS: Laparoscopic nerve-sparing RPLND is technically feasible. Performance of laparoscopic nerve-sparing RPLND decreases the potential morbidity associated with the standard laparoscopic technique further and may help expand the therapeutic potential for this minimally invasive procedure.

Humans↗

Complications of primary retroperitoneal lymph node dissection.

The surgical morbidity in 478 patients who underwent primary retroperitoneal lymphadenectomy for clinical stages I and II nonseminomatous testicular cancer from 1982 to 1992 was reviewed. There were 54 complications in 51 patients (10.6%) and no operative related mortality. Superficial wound infection was the most frequent complication, comprising 45% of the total number of complications. Most major complications were related to small bowel obstruction and atelectasis. No complications caused permanent disability. The complication rate was less in patients who underwent a modified unilateral procedure (9.4%) than in those who underwent bilateral dissection (19.3%). Complications were significantly less with procedures done during the latter 6 years of the study (1987 to 1992). The ejaculation rate of patients undergoing a nerve sparing procedure was 98%, which reflects the increase in experience gained with the technique of nerve sparing modified unilateral dissection for early stage testicular cancer. This study reinforces the view that primary retroperitoneal lymph node dissection is an operation with minimal morbidity and no long-term effects. Furthermore, this study serves as the basis for cost-benefit and risk-benefit analyses of primary retroperitoneal lymph node dissection in low stage testicular cancer, which can be set against surveillance and primary chemotherapy programs.

Humans↗

The question of retroperitoneal lymph node dissection for clinical stage I non-seminomatous testis tumors.

Fifty retroperitoneal lymph node dissection (RPLND) performed by the same surgeon on 45 clinical stage I and in 5 clinical stage II cases of non seminomatous testis tumors were reviewed. Of the 45 clinical stage I patients, 12 revealed retroperitoneal lymph node involvement. Of the 17 stage II cases, one survived for more than 4 years and 3 for more than 6 years with no other treatment. There was no evidence of recurrence. Eight patients with no other treatment died within one year and a half of RPLND. Five patients, some with gross nodal disease are alive with no evidence of recurrence after RPLND and chemotherapy (PVB) (Einhorn, Donohue 1977). Of the 50 patients, only two preserved ejaculation. The author questions the systematic use of RPLND in clinical stage I testis tumors. In view of the improvement of chemotherapy agents, he favors the option of careful surveillance of these patients, who should benefit from chemotherapy and eventually surgical resection according to the progress of the disease.

Ejaculation↗

Patient selection for retroperitoneal lymph node dissection after chemotherapy for nonseminomatous germ cell tumors.

The indications for retroperitoneal lymph node dissection (RPLND) after chemotherapy for nonseminomatous germ cell tumor of the testis vary widely. We reviewed our experience with 122 patients who underwent RPLND within 6 months of receiving cisplatin-based chemotherapy for bulky (greater than 3 cm) retroperitoneal metastases. Pathologic findings were necrotic tissue in 57 (47%), teratoma in 48 (39%), and residual malignancy in 17 (14%). The size of the retroperitoneal mass after chemotherapy (p = 0.001) and the degree of shrinkage that occurred with chemotherapy (p = 0.0001) were both strongly correlated with the histologic findings at RPLND. The presence or absence of teratomatous elements in the pretreatment orchiectomy specimens was only weakly correlated (p = 0.06). Multivariate logistic regression found shrinkage and the size of the residual mass to be independent predictors of finding only necrotic tissue. We were unable to identify preoperatively a group of patients in which some did not have teratoma or malignancy ultimately resected. Of 39 patients who had a residual mass less than 1.5 cm, and 43 patients whose residual mass was less than 1.5 cm or whose mass had shrunk by greater than 90%, 3 had residual malignancy, and 5 had teratoma resected. Among these 8 patients, 7 had prechemotherapy masses greater than 3 cm. Even with stricter criteria, of 17 patients with no testis teratoma initially and a residual mass less than 1.5 cm which had shrunk by greater than 90%, 5 (30%) had teratoma or malignancy resected. Postchemotherapy RPLND is recommended for all patients with a prechemotherapy mass greater than or equal to 3 cm, irrespective of the radiographic findings.

Antineoplastic Combined Chemotherapy Protocols↗

Controversies in the management of paratesticular rhabdomyosarcoma: is staging retroperitoneal lymph node dissection necessary for adolescents with resected paratesticular rhabdomyosarcoma?

PURPOSE: Use of retroperitoneal lymph node dissection (RPLND) in paratesticular rhabdomyosarcoma (PTRMS) is controversial and has changed over the past 2 decades. The Intergroup Rhabdomyosarcoma Study Group (IRSG) required ipsilateral RPLND (IRPLND) for all patients with PTRMS treated on IRS-III (1984-91), but changed to clinical evaluation of RPLNs using computerized tomography (CT) in IRS-IV (1991 through 1997). In IRS-IV, only those patients with identified lymph node involvement on CT required surgical evaluation of the RPLNs. Nodal radiation therapy was administered only to patients with RPLNs recognized as positive; such patients received more intensive chemotherapy as well. Thus, they compared the incidence of recognized RPLN involvement using these 2 different approaches. They then analyzed patient outcome to determine whether this change in management affected outcome. METHODS: Eligible patients with group I or II PTRMS who were treated on IRS III (n = 100) or IRS IV (n = 134) were analyzed. Failure-free survival (FFS) and survival (S) rates were estimated using the Kaplan-Meier method and compared using the log-rank test. RESULTS: There was a significant change in the distribution of patients with group I versus II tumors from IRS-III to IRS-IV (group I, 68% in IRS-III versus 82% in IRS-IV). This was the result of decreased node recognition when CT was used to stage RPLNs in IRS-IV and was most notable for adolescents (>10 years of age). Overall, 3-year FFS was 92% for patients treated on IRS-III and 86% for those treated on IRS-IV (P =.10), whereas survival estimates were 96% and 92%, respectively (P =.30). Adolescents were at higher risk of RPLN relapse than were children (<10 years of age) and their FFS and survival were worse, regardless of IRS protocol. Furthermore, adolescents with recognized group II tumors experienced better 3-year FFS than those with group I tumors on IRS-IV (100% versus 68%, P =.06), most likely as a result of receiving radiotherapy and intensified chemotherapy. CONCLUSIONS: Use of only CT scan evaluation of RPLN in IRS-IV led to a decrease in identification of RPLN involvement in boys who present with localized PTRMS, and a higher rate of regional relapse as compared with IRS-III. Adolescents had much higher likelihood of RPLN disease, and they fared significantly worse than did younger children on both studies. Furthermore, adolescent boys with group I tumors experienced worse FFS than those with Group II tumors on IRS-IV, probably because some patients with group II tumors were not identified by CT imaging and thus received less effective therapy. These data suggest that adolescents should have ipsilateral RPLN dissection as part of their routine staging, and those with positive lymph nodes require intensified chemotherapy as well as nodal irradiation.

Adolescent↗

Laparoscopic retroperitoneal lymph node dissection for clinical stage I nonseminomatous testicular carcinoma: long-term outcome.

PURPOSE: We report the long-term oncological efficacy and morbidity of laparoscopic retroperitoneal lymph node dissection for testicular carcinoma. MATERIALS AND METHODS: From August 1992 to September 1999, 73 consecutive patients underwent laparoscopic retroperitoneal lymph node dissection with modified unilateral template dissection. All lumbar vessels within the template were routinely transected in the initial 29 cases only. Patients with positive lymph nodes received 2 cycles of chemotherapy. RESULTS: Operative time ranged from 150 to 630 minutes (mean 221) in our most recent 28 cases. All but 2 operations were completed as planned for a conversion rate of 2.7%. Minor intraoperative complications developed in only 6.8% of cases. In our last 44 patients there was no major and only 1 minor (2.3%) postoperative complication. Mean postoperative hospitalization was 3.3 days. Ejaculation was preserved in all patients. Lymph nodes were positive in 19 cases (26%). Mean followup in 47 patients with pathological stage I disease was 43.3 months (range 7 to 84). We noted 1 retroperitoneal recurrence due to false-negative histological findings but there were no other relapses. At a mean followup of 42.7 months (range 6 to 86) 17 patients with pathological stage II carcinoma treated with 2 cycles of adjuvant chemotherapy were also free of disease. CONCLUSIONS: In our hands laparoscopic retroperitoneal lymph node dissection has not only proved its surgical efficiency, but also its oncological efficacy. Patient satisfaction is high. During long-term followup of more than 3 years not a single recurrence developed due to surgical failure.

Adolescent↗

Combined post-chemotherapy retroperitoneal lymph node dissection and resection of chest tumor under the same anesthetic is appropriate based on morbidity and tumor pathology.

PURPOSE: We determine if post-chemotherapy resection of residual retroperitoneal and chest tumor under the same anesthetic is reasonable based on tumor pathology and morbidity, and if the finding of necrosis in the abdomen allows observation of chest tumor. MATERIALS AND METHODS: We retrospectively reviewed 143 post-chemotherapy patients who underwent resection of residual retroperitoneal and chest disease under the same anesthetic. RESULTS: Retroperitoneal pathology was generally predictive of chest pathology. Concordance existed in 77.5% of patients with necrosis, 70% with teratoma and 69% with cancer of the abdomen. However, the correlation was much stronger (86%) in predicting necrosis/fibrosis if cases were categorized as uncomplicated by Indiana University criteria. Although the morbidity of the combined approach is higher than that of standard post-chemotherapy retroperitoneal lymph node dissection, it was acceptable. CONCLUSIONS: The morbidity of post-chemotherapy retroperitoneal lymph node dissection and resection of chest disease under the same anesthetic is acceptable. Retroperitoneal pathology generally predicts chest pathology but this correlation is much stronger if the case is uncomplicated based on our criteria. In an uncomplicated case the discovery of necrosis of the abdomen allows observation of chest tumor.

Anesthesia↗

Laparoscopic retroperitoneal lymph node dissection.

OBJECTIVES: Primary objective of the present article is to evaluate the surgical efficiency of the laparoscopic retroperitoneal lymph node dissection in clinical stage I and II testis tumor. Secundary, objective is the description of the technique used by the author. METHODS: A description of the author's experience and review of the literature in terms of feasibility, oncological results and quality of life. RESULTS: Once the learning curve has been overcome, the operative time is in the range of that open surgery with lower morbidity and complications. Ejaculation can be preserved in virtually all patients by means of a template dissection. With a mean follow-up of almost four years oncologic long-term outcome is not compromised by the laparoscopic approach. CONCLUSIONS: In clinical stage I testis tumor laparoscopic retroperitoneal lymph node dissection can be used as a diagnostic measure with the same long term results as the open procedure. In stage II disease removal of residual tumor can also be achieved by laparoscopy.

Antineoplastic Agents↗

Laparoscopic retroperitoneal lymph node dissection in clinical stage I nonseminomatous germ cell tumor: a minimal invasive alternative.

OBJECTIVE: To evaluate modified laparoscopic retroperitoneal lymph node dissection (LRPLND) performed for stage I nonseminomatous germ cell tumor. METHODS: Between December 1993 and January 1996, modified unilateral laparoscopic retroperitoneal lymph node dissection was performed on 13 patients with nonseminomatous germ cell tumor of the testis. In 8 patients, the tumor was on the right side, and in 5, on the left. RESULTS: The procedure was completed in 12 patients at a mean operating time of 292 min (range: 210-400 min). The mean estimated blood loss was 250 ml. The mean hospital stay was 6.4 days. Conversion to open surgery was required in one patient because of an uncontrollable venous bleeding. No other major complications occurred. Antegrade ejaculation was preserved in 10 patients, and the last 3 patients have not yet been addressed now. CONCLUSIONS: Our results demonstrate that LRPLND is an accurate and reliable staging procedure with low morbidity, which allows quick patient discharge and rapid return to normal activity. For further evaluation, long follow-up in larger groups of patients is required.

Adult↗

[Retroperitoneal lymph node dissection for patients with advanced testicular tumor].

We examined the indication for retroperitoneal lymph node dissection (RPLND) for 30 patients with advanced testicular tumor and made the following conclusion. The sequence of RPLND and primary chemotherapy made no difference in the therapeutic effect for patients with stage II A non-seminomatous germ cell tumor (NSGCT). However, we thought it better to administer primary chemotherapy prior to RPLND to prevent dissemination of tumor cells. Viable tumor cells often remained in retroperitoneal residual tumors even after chemotherapy in the patients with NSGCT advanced beyond stage II B. Therefore, RPLND seemed to be necessary if residual retroperitoneal tumors were found after the chemotherapy. In patients with seminoma, RPLND did not seem to be necessary if the residual tumor was less than 3 cm in diameter or the reduction rate of the retroperitoneal tumor was more than 80% after the initial therapy (chemotherapy or irradiation therapy.

Cisplatin↗