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Biomedical subjects

N Tsukamoto

Publications and source records attributed to N Tsukamoto.

At least 145 records · Page 8Linked to original sources
PubMed1989

[Evaluation of pre-radiotherapy staging laparotomy in cancer of the uterine cervix].

Staging laparotomy prior to radiotherapy was performed in 70 patients with cervix cancer. Biopsy proven para-aortic lymph node metastases were found in 16(22.9%) patients. Pelvic lymph node metastases were estimated by palpation at laparotomy and 36(51.4%) patients were thought to be positive. Other laparotomy findings were: invasion to the bladder muscle in 14, cul-de-sac metastasis in 10, adnexal metastasis in 2, other intrapelvic metastasis in 3, and positive peritoneal cytology in 9. At laparotomy several hemostatic clips were put on the serosal surfaces of the uterine wall in order to visualize the uterine contour in the localization X-ray films. By this method, six patients were proved to have uterine perforation at the time of small source insertion. Five-year survival rates for each clinical stage were: Stage I, 60%; II, 35.7%; III, 56.8%; and IV 0%. It seems that stage II is worse than stage III, but statistical differences were not found among stages I, II, and III. Three patients with para-aortic metastasis survived for more than four years. Late radiation complications occurred in 25(35.7%) of the patients. This complication rate was statistically higher than that of the patients who had not undergone staging laparotomy (21.1%).

Adult↗
PubMed1989

[Urinary methylmalonic acid excretion and clinical features in megaloblastic anemia due to vitamin B12 deficiency].

Urinary methylmalonic acid (MMA) excretion in megaloblastic anemia due to vitamin B12 (B12) deficiency was studied using a colorimetric method. Average MMA excretion in 20 patients with untreated B12 deficiency was 164 mg/day, whereas it increased to 518 mg/day following oral administration of 10 g L-valine. Urinary MMA correlated significantly with platelet number, erythroblast percentage and deoxyuridine suppression test, while no correlation was found with hemoglobin, leukocyte number, reticulocyte, serum LDH, serum B12 and folate concentration. Patients with neurological disturbances excreted significantly larger amounts of MMA than those without neurological disorders. The results also indicated that MMA could be a useful adjunct for differentiation of megaloblastic anemia from myelodysplastic syndromes showing marked megaloblastic changes.

Adolescent↗
PubMed1988

Peritoneal cytology in patients with endometrial carcinoma.

Peritoneal cytology was obtained in 61 patients with carcinoma of the endometrium at the time of laparotomy. The incidence of positive peritoneal cytology was 23.0%. It increased as the clinical stage advanced. The incidence of positive peritoneal cytology in patients with well-differentiated carcinoma or superficial myometrial invasion was low. The rate of paraaortic lymph node metastasis was higher in patients with positive peritoneal cytology than in patients with negative peritoneal cytology. However, this trend was not recognized in pelvic lymph node metastasis. In the positive peritoneal cytology group, 64.3% had disease outside of the uterus, while in the negative group only 12.8%. The 2-year survival rate in patients with positive peritoneal cytology was 57.1% and it was 86.4% in patients with negative peritoneal cytology. It is concluded that the findings of positive peritoneal cytology is an important prognostic factor and routine peritoneal cytology should be obtained at the time of laparotomy in patients with carcinoma of the endometrium.

Adenocarcinoma↗
PubMed1988

Alpha-fetoprotein producing endometrial adenocarcinoma: report of a case.

A case of endometrial adenocarcinoma which is producing alpha-fetoprotein (AFP) is described. AFP has been reported to be a tumor marker of gynecologic tumors, such as endodermal sinus tumor and embryonal carcinoma of the ovary. However, to our knowledge, there has been no report of AFP producing endometrial adenocarcinoma. The histologic study showed poorly differentiated adenocarcinoma of the endometrium and AFP was detected in the tumor cells by an immunoperoxidase-peroxidase-antiperoxidase technique.

Adenocarcinoma↗
PubMed1988

[Cisplatin, vinblastine, and bleomycin combination chemotherapy in a stage IV pure endodermal sinus tumor of the ovary--a case report of a long-term survival].

Discussed is a case of a stage IV pure endodermal sinus tumor (EST) of the ovary that was treated with a PVB protocol following cytoreductive surgery. The serum alpha-fetoprotein (AFP) dosage before treatment was 83,546 ng/ml, and a complete clinical response was achieved with the disappearance of pleural effusions, ascites, and normalization of the serum AFP. A second-look laparotomy was substituted by serial AFP determinations and the patient remained free of disease for two years. Recently, complete remissions and long term survivals of patients with a stage I-II disease have been reported, though a prolonged or a complete remission of a stage IV EST of the ovary is still a rarity.

Adolescent↗
PubMed1988

[Evaluation of paraaortic lymph node metastasis in patients with primary epithelial carcinoma of the ovary].

From 1979-1986, 110 patients with an ovarian cancer have been treated at Kyushu University Hospital. Sixty-eight of these patients with untreated primary adenocarcinoma of the ovary underwent a paraaortic lymph node (PAN) biopsy at the time of their initial surgery. Twenty-two of these 68 patients were found (32.4%) to have a positive PAN. Microscopic PAN metastases were present in 4 patients, who, macroscopically, seemed to have the disease confined to the pelvis. The incidence of a positive PAN was seen to correlate with the clinical stage and degree of differentiation of the primary tumor. Positive PANs were more frequent in cases of a serous rather than a mucinous carcinoma. All 5 patients with a metastatic adenocarcinoma originating from the stomach or the colon had a positive PAN. It thus has been concluded that a PAN evaluation is important for the management of ovarian cancer.

Adenocarcinoma↗
PubMed1988

[Evaluation of para-aortic lymph node metastases in patients with cervical cancer].

From 1979 to 1986, 355 patients with cervical cancer underwent paraaortic lymph node (PAN) biopsy before the start of initial treatment. Nineteen of these 355 patients (5.4%) had a positive PAN, and the percentage incidence of positive PAN in each clinical stage was as follow: stage Ib, 2.4%; IIa, 0%; IIb, 3.7%; IIIb, 19.0%; and IV, 20%. Eighteen of these 19 patients also had positive pelvic lymph nodes. Positive PANs were found to be more frequent in cases of an adenocarcinoma than in cases of squamous cancer. The palpation of the PANs seemed to be too insufficient to predict the metastasis. Patients with positive PAN who had received paraaortic irradiation survived longer than those who did not receive such treatment. It is concluded that the evaluation of the PAN is important for the management of a cervical cancer.

Adenocarcinoma↗
PubMed1988

[Superior vena cava syndrome associated with carcinoma of the uterine cervix--report of two cases].

Superior vena cava syndrome (SVCS) is a very rare complication in patients with a gynecologic malignancy. Only 4 cases have been reported in the English literature thus far and, to our knowledge, no such case has been reported in the Japanese literature. We have encountered two cases of SVCS in patients with cervical cancer. In case 1, the SVCS developed secondarily to a metastasis of the cervical cancer to the lungs and mediastinum. In case 2, the cause of the SVCS had been presumed to be due to metastatic cervical cancer, however on autopsy, it turned out to be due to a coexistent malignant lymphoma.

Carcinoma, Squamous Cell↗
PubMed1987

Peritoneal cytology in patients with carcinoma of the uterine cervix.

Peritoneal cytology was obtained in 125 patients with carcinoma of the uterine cervix at the time of laparotomy. The incidence of positive peritoneal cytology was 11.2%. Positive peritoneal cytology was found four times more frequently in adenocarcinoma than in squamous cell carcinoma. The incidence of pelvic lymph node and paraaortic lymph node metastasis was higher in patients with positive peritoneal cytology than in patients with negative peritoneal cytology. The 2-year survival rate in patients with positive peritoneal cytology was 30.0% and it was 82.7% in patients with negative peritoneal cytology. Some patients (28.6%) with positive peritoneal cytology developed peritonitis carcinomatosa. It was concluded that it is very important to obtain peritoneal cytology routinely at the time of laparotomy in patients with carcinoma of the cervix.

Carcinoma↗
PubMed1987

[Evaluation of the efficacy of cisplatin-based chemotherapy in epithelial ovarian cancer; comparison with treatments employed before the cisplatin era].

Seventy-five patients with epithelial ovarian cancers received cisplatin-based chemotherapy as a post-surgical treatment in the 1980s. In the 1970s, fifty-eight patients received various treatments without cisplatin, which included radiotherapy, chemotherapy and their combination. In the patients with stage III disease, cisplatin-based chemotherapy achieved a median survival of 24 months, whereas other treatments employed in the 1970s achieved a median survival of 8 months. In the patients with early disease, however, cisplatin-based chemotherapy did not improve the survival. Since it is clear that cisplatin-based chemotherapy achieved an improved survival in the treatment of advanced epithelial ovarian cancer, it is concluded that this therapy is worth continuing until a more effective treatment is available.

Adult↗
PubMed1987

[An evaluation of para-aortic and pelvic lymph node metastases in patients with endometrial carcinoma].

During 1979-1986, 101 patients with an endometrial carcinoma were treated. Eighty-four of these patients underwent a para-aortic lymph node (PAN) biopsy at the time of their initial surgery, eight of whom (9.5%) were found to have a positive PAN. The incidence of positive PAN as per each clinical stage, was as follows: stage I, 2.0%; II, 11.5%; III, 50%; and, IV, 33.3%. Positive pelvic nodes were found in 19.2% of the patients, per the following stages: stage I, 6.1%; II, 32%; and, III & IV, 100%. This finding suggests that PAN metastasis occurs after the pelvic nodes are involved. A 5-year survival rate of approximately 50% is expected even in patients with a positive PAN. Thus our study concludes that an evaluation of para-aortic and pelvic lymph nodes is important for the management of an endometrial carcinoma.

Adult↗
PubMed1986

Prophylactic chemotherapy for hydatidiform mole. Five to 15 years follow-up.

The effectiveness of the prophylactic chemotherapy was evaluated in 420 patients with molar pregnancy. All patients were followed for 5 to 15 years after the evacuation. Twenty-two (7.5%) of 293 patients with prophylactic chemotherapy and 23 (18.1%) of 127 patients without prophylactic chemotherapy (control) developed secondary trophoblastic disease. The prophylactic chemotherapy could reduce the occurrence of secondary trophoblastic disease. In these secondary trophoblastic diseases, 5 (22.7%) of 22 patients in the prophylactic chemotherapy group and 5 (21.7%) of 23 in the control had metastatic trophoblastic disease. Choriocarcinoma after the molar pregnancy developed in two patients (0.7%) of the prophylactic chemotherapy group and two (1.6%) of the control. Prophylactic chemotherapy did not eliminate the occurrence of choriocarcinoma. The complication of the prophylactic chemotherapy was seen in 27.3% of the patients. Neither severe complication nor death were related to the toxicity.

Adolescent↗
PubMed1986

Choriocarcinoma in mother and fetus.

Choriocarcinoma in mother and child is extremely rare and review of the literature revealed only six reported cases. We are presenting the seventh such case. Autopsy of the fetus of 39 weeks' gestation revealed metastatic choriocarcinoma. Workup of the mother showed an occult choriocarcinoma in the uterus. Aggressive chemotherapy was initiated promptly and remission was achieved.

Adult↗