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Biomedical subjects

Ian K Komenaka

Publications and source records attributed to Ian K Komenaka.

At least 19 recordsLinked to original sources

The development of interval breast malignancies in patients with BRCA mutations.

BACKGROUND: At present, there is no consensus regarding how frequently BRCA mutation carriers should be screened for malignancies using breast imaging techniques. An interval malignancy is defined as a malignancy that becomes evident during the period between annual screening mammography scans; the finding of such a malignancy indicates that the malignancy either went undetected by the last breast imaging scan or developed during the interval since that last scan. METHODS: The authors retrospectively reviewed the medical charts of all BRCA mutation carriers who were followed by the genetic counselor at the Columbia-Presbyterian Comprehensive Breast Center (New York, NY) between September 1995 and September 2002. RESULTS: Thirteen BRCA mutation carriers elected to undergo close surveillance and thus were followed at our institution. Three of these 13 patients (23%) did not develop breast carcinoma, 4 (31%) developed breast carcinoma that was detected at the time of annual screening, and 6 (46%) developed palpable interval malignancies in less than 12 months. Among the six patients who developed interval malignancies, the mean time between the last screening mammogram and disease presentation was 5.1 months (range, 2-9 months); the average tumor size in this patient subgroup was 1.7 cm (range, 0.8-3 cm). Two of these six patients had ductal carcinoma in situ, whereas the remaining four had invasive breast carcinoma; three patients had positive lymph nodes at presentation. All six patients who developed interval disease exhibited dense breast tissue on the previous mammogram. Focused breast ultrasonography was able to identify the tumor mass in 3 of 4 patients (75%). CONCLUSIONS: Nearly half of all BRCA-positive women who chose to undergo close surveillance in the current study developed malignant disease less than a year after exhibiting normal findings on screening mammography. Half of these interval malignancies were positive for lymph node involvement. These results suggest that strong consideration should be given to screening BRCA-positive women at more frequent intervals and to using additional imaging techniques, such as breast ultrasonography and/or breast magnetic resonance imaging, as a part of this screening.

Adult↗

Men with breast cancer have better disease-specific survival than women.

HYPOTHESIS: Male breast cancer patients have better disease-specific survival than carefully matched female breast cancer patients. DESIGN: Retrospective study. SETTING: University hospital. PATIENTS AND METHODS: Each man in the breast cancer database at Columbia-Presbyterian Medical Center (New York, NY) between the years 1980 and 1998 was matched with a woman. Matching was done based on age and date of diagnosis, stage, and primary histologic findings. MAIN OUTCOME MEASURES: The overall survivals and disease-specific survivals of the male breast cancer group and female breast cancer group were compared. RESULTS: Fifty-three male patients were matched with an equal number of female breast cancer patients. The Kaplan-Meier curves demonstrated that there was no significant difference in overall survival. The 5- and 10-year survivals for women were 0.77 and 0.51, and for men 0.77 and 0.56. When the Kaplan-Meier curves for breast cancer-specific survival were compared, however, there was a significant difference in the 5- and 10-year survivals (P = .05, log-rank test). For women, the 5- and 10-year disease-specific survival was 0.81 and 0.7, respectively, while for men it was 0.9 and 0.9, respectively. In a Cox regression analysis for time to death from breast cancer, stage was the only predictor of death that approached significance (P = .06). CONCLUSIONS: While the overall survivals were equivalent, male breast cancer patients had significantly better disease-specific survivals compared with their female counterparts. Male patients were 4 times more likely to die of other causes than their breast cancer.

Aged↗

Interpectoral nodes as the initial site of recurrence in breast cancer.

HYPOTHESIS: Interpectoral nodes can be the initial site of recurrent breast cancer. DESIGN: Retrospective review. SETTING: Comprehensive breast center, located in a university-based tertiary care center. PATIENTS: All patients undergoing operations for breast cancer at our breast center from 1995 to 2002 were reviewed. MAIN OUTCOME MEASURES: Patients with interpectoral node recurrence as the initial site of recurrent breast cancer were identified. RESULTS: During the 8-year period, 4097 patients underwent surgical management for breast cancer. During this time, 4 patients (0.1%) had recurrence at the interpectoral nodes. Three of the 4 patients were node-negative at the original operation. All lesions were mammographically occult. Preoperative needle biopsy was effective in the confirmation of malignancy. All 4 underwent excision without complications. CONCLUSIONS: Recurrence at the interpectoral nodes can be the initial site of surgical failure. These nodes may represent the site of primary drainage in a percentage of patients. The sentinel node identification technique, therefore, should diminish the number of patients affected by recurrence at this site. In patients with a palpable mass in the infraclavicular location, however, a high index of suspicion should be maintained. Workup should include additional breast imaging and needle biopsy prior to operation.

Adult↗

Pure mucinous carcinoma of the breast.

BACKGROUND: The lack of a standard definition of "pure" mucinous carcinoma of the breast has made it difficult to compare data from different studies. This study used the most stringent criteria to define parameters for truly pure lesions. METHODS: Sixty-five patients were identified. The database was used to evaluate patients' demographics, tumor characteristics, and outcomes. Survival curves and predictors of survival were analyzed. RESULTS: The mean age of presentation was 67 years. The majority (96%) of patients presented with early-stage disease. The 5- and 10-year overall survival rates were 93.6% and 72.8%, respectively. The number of involved axillary lymph nodes was the only significant predictor of death (P = 0.02). CONCLUSIONS: Pure mucinous carcinoma of the breast has a favorable prognosis. Tumor size does not appear to impact survival, perhaps because the volume of mucin overestimates tumor burden. The number of involved axillary lymph nodes was the only significant predictor of death from disease.

Adenocarcinoma, Mucinous↗

Pulse oximeter changes with sentinel lymph node biopsy in breast cancer.

HYPOTHESIS: The changes reported with pulse oximetry after the injection of isosulfan blue for sentinel lymph node identification in patients with breast cancer are consistent and predictable. DESIGN: Retrospective study. SETTING: University hospital. PATIENTS AND METHODS: The complete anesthesia records of 92 patients who underwent sentinel lymph node biopsy with intraparenchymal injection of isosulfan blue were reviewed. The study extended from January 1999 to February 2000. The operations were all performed after the patient received general anesthesia. We injected 5 mL of isosulfan blue into the breast tissue surrounding the tumor. The data reviewed included preinjection pulse oximeter saturation readings and postinjection values continuing until the readings returned to baseline levels in the postanesthesia care unit. MAIN OUTCOME MEASURES: Changes in oxygen saturation readings with the pulse oximeter before and after injection of isosulfan blue. RESULTS: Isosulfan blue injection interfered with pulse oximeter measurements for a substantial time-as much as 195 minutes. The mean time to the maximum change in the pulse oximeter reading was 35 minutes. The median decrease in oxygen saturation was 5%. The maximum decrease in the pulse oximeter reading was 11%. CONCLUSIONS: Although the changes in pulse oximeter readings can be substantial, their course appears to be predictable, and therefore in most otherwise healthy patients with normal pulmonary function, invasive monitoring is not necessary.

Adult↗

Core needle biopsy as a diagnostic tool to differentiate phyllodes tumor from fibroadenoma.

HYPOTHESIS: Core needle biopsy is a useful diagnostic tool in differentiating phyllodes tumor from fibroadenoma. DESIGN: The radiology database was queried for patients who underwent core needle biopsies of fibroepithelial lesions that raised the possibility of phyllodes tumor. These diagnoses were then compared with the final pathological diagnoses after surgical excision. SETTING: The data were gathered from the Comprehensive Breast Center, Columbia Presbyterian Medical Center, a tertiary care, university-based medical center. RESULTS: From August 21, 1998, to December 14, 2001, 57 core needle biopsies were identified in which the specimen raised the possibility of phyllodes tumor. The median age of the patients was 42 years (range, 16-77 years). The median diameter of all lesions was 1.1 cm (range, 0.6-3.6 cm). Of the 57 specimens, 25 had core biopsies in which the pathological findings favored a diagnosis of fibroadenoma over phyllodes tumor. Twenty-three had initial core biopsies favoring phyllodes tumor. Nine of the core biopsies were equivocal. Of the 25 patients with specimens favoring fibroadenoma, excisional biopsy confirmed the diagnosis of fibroadenoma in 23, and phyllodes tumor was found in 2. The negative predictive value was 93%. Of the 23 core biopsies favoring phyllodes tumor, 19 were confirmed on excisional biopsy, while 4 were fibroadenoma. The positive predictive value was 83%. In the equivocal core biopsies, 5 were fibroadenoma and 4 were phyllodes tumor on final pathological analysis. None of the lesions studied were determined to be malignant on final analysis. CONCLUSIONS: Core needle biopsy can significantly reduce the need for operative management of fibroepithelial lesions. A core needle biopsy with results favoring fibroadenoma should allow the breast physician to treat the lesion as a fibroadenoma, with observation and close follow-up or with enucleation. Core needle histologic examination of phyllodes tumor allows the physician to preoperatively plan the definitive management at one surgical procedure, reducing the need for reoperations.

Adolescent↗

Strongyloides appendicitis: unusual etiology in two siblings with chronic abdominal pain.

Appendicitis is one of the most common causes of acute surgical disease in children and young adults. Parasites, however, are one of the uncommon etiologies. An 8-year-old girl and her 7-year-old sister presented with more than 2 months of chronic abdominal pain that became worse over a 1-week period before presentation. The 2 sisters presented 1 month apart. Both had similar symptomatology and physical examination findings. At operation, the surgical findings included an inflamed appendix with a cross section of the parasite Strongyloides. Strongyloides appendicitis has occurred almost exclusively in areas endemic to the parasite. Its environment is more common outside the United States but occasionally is seen in the Southeast region and in institutionalized individuals. The presentation of acute exacerbation of chronic abdominal pain coupled with the pathologic finding of Strongyloides in an acutely inflamed appendix, should alert the clinician of other possible cases. This increased index of suspicion will allow more prompt diagnosis and help avoid the morbidity of delayed operation.

Abdominal Pain↗

Management of metastatic malignant melanoma of the bladder.

Recombinant interleukin-2 (IL-2) has demonstrated antitumor activity and durable clinical responses in patients with metastatic melanoma. Careful screening and selection of appropriate patients has improved the safety profile of IL-2 administration. Gross hematuria would ordinarily preclude the safe delivery of IL-2. We report a case of metastatic melanoma to the bladder presenting with hematuria. A complete resection was performed and subsequently allowed the administration of high-dose, bolus IL-2. The combination of resection and IL-2 therapy resulted in a partial response maintained for more than 18 months. Symptomatic bladder melanoma should be aggressively treated to allow for systemic immunotherapy, which can provide durable responses.

Antineoplastic Agents↗

A "clean" technique for managing bleeding duodenal ulcer with a new aortic prosthesis: endoscopic-assisted repair of bleeding duodenal ulcer.

Aortic graft infection is one of the most dreaded surgical complications. In the perioperative patient with fresh aortic prosthesis, this is a particularly complex problem. Opening the bowel changes an operation to a "clean-contaminated" or "contaminated" case. This increases the risk of all infectious complications in the patient. Theoretically, our method of repair reduces the risk of infection by eliminating the duodenotomy. The direct visualization with the endoscope replaces the need to open the potentially contaminated bowel and reduces the risk of bacterial translocation and bacteremia. By not opening the bowel, this keeps the case "clean," and likely reduces the risk of contamination and subsequent infection of the prosthetic graft. As the potential morbidity of aortic graft infection is so devastating, and now that we have the available technology and operative skill, we propose our technique as a potential alternative to possibly reduce the incidence of aortic graft infection.

Aortic Aneurysm, Abdominal↗

Postoperative vomiting causing esophageal rupture after antiemetic use. A case report.

BACKGROUND: Antiemetic medications are commonly used in the postoperative patient. Despite the lack of evidence-based data, these medications have also been increasingly used in the management of postoperative ileus. This practice is dangerous and increases the risk for morbidity and mortality. CASE: A 77-year-old woman underwent an uneventful total abdominal hysterectomy and bilateral salpingo-oophorectomy. The patient developed abdominal distention and vomiting, which were managed with antiemetic medication. The patient continued to vomit, developed esophageal rupture (Boerhaave's syndrome) and died of sepsis and multiorgan failure. CONCLUSION: Despite no scientific evidence for it, the practice of using antiemetic medications and prokinetic agents in the management of postoperative ileus continues. This places the patient at increased risk for completely preventable morbidity, including aspiration, pneumonia, esophageal perforation, prolonged hospital stay and death.

Aged↗

Fitz-Hugh-Curtis syndrome after laparoscopic tubal ligation. A case report.

BACKGROUND: Minimally invasive techniques are being used throughout all fields of surgery. With the increasing use and complexity of these cases, new complications will also develop. Fitz-Hugh-Curtis syndrome is an uncommon finding from the spread of infection in pelvic inflammatory disease, causing perihepatitis. CASE: A 29-year-old woman presented 2 weeks after an apparently uneventful laparoscopic tubal ligation with a complaint of right upper quadrant pain. She also had elevated liver function tests but normal ultrasound of the gallbladder. Eventually an intravenous pyelogram showed a bladder injury. Computed tomography revealed fluid in the pelvis and enhancement around the liver. During surgery, intense inflammation with multiple adhesions throughout the peritoneal cavity and around the liver were found. CONCLUSION: The findings were similar to the perihepatitis that occurs when Fitz-Hugh-Curtis syndrome complicates pelvic inflammatory disease. The unusual presentation in this patient made diagnosis very difficult and should remind physicians that unusual complications must be considered as technology evolves and spreads throughout all surgical fields.

Adult↗

Mini-laparotomy cholecystectomy in the era of laparoscopic cholecystectomy: a community-based hospital perspective.

Laparoscopic cholecystectomy is clearly the gold standard for symptomatic cholelithiasis. Open cholecystectomy is now reserved for difficult and problematic cases. The purpose of this paper is to propose that mini-laparotomy cholecystectomy (minicholecystectomy) can be as effective as laparoscopic cholecystectomy. This paper compares the two techniques in well-matched patients. In addition mastery of this technique is practical and rewarding and should be part of the repertoire of the general surgeon. We conducted a retrospective review of the experience of a single surgeon at a community-based teaching hospital over a 2-year period for minicholecystectomy and laparoscopic cholecystectomy. Sixty-six patients were matched for age, sex, body surface area, and Acute Physiology and Chronic Health Evaluation II score. The absolute cost was lower for the minicholecystectomy group than for the laparoscopic cholecystectomy group. The operating room times were not significantly different in the two groups (P value 0.79). The average length of stay and the average amount of intramuscular analgesia required for the two groups were also not significantly different (P values 0.69 and 0.35, respectively). Although subjective postoperative satisfaction was equal for both groups the minicholecystectomy group had no complications whereas the laparoscopic group had two (myocardial infarction and cystic duct stump leak) complications. We conclude that minicholecystectomy can be used as a viable alternative to laparoscopic cholecystectomy especially in patients who cannot tolerate laparoscopic procedures and in areas where cost containment is critical.

Adult↗

Recurrent eosinophilic mastitis.

Systemic diseases rarely present with manifestations in the breast. Disorders such as sarcoidosis and pyoderma gangrenosum have been described to produce signs and symptoms in the breast. Peripheral eosinophilia is a systemic disease associated with a finite group of conditions including asthma, allergic or atopic disease, collagen vascular disease, and parasitic infection. In addition it has been described in association with several malignancies. A 50-year-old woman with a history of asthma and significant eosinophilia presented with an enlarging breast mass. Complete excision of the mass revealed eosinophilic mastitis. Two years later the patient again presented with a large mass in the same breast. Repeat excision demonstrated the same pathology. The clinical significance of this lesion is important because it presents as an enlarging, painless, dominant mass. Excision is necessary for management and to conclusively rule out malignancy. Its recurrence despite excision to negative margins, however, may indicate that control of the eosinophilia--and possibly the underlying disorder--is important to prevent further recurrence.

Breast↗