1/158. Primary endodermal sinus tumor of the omentum.endodermal sinus tumor (EST) is a rare neoplasm which usually arises in the testis or ovary. But extragonadal EST is well recognized and may arise in a wide array of sites such as the mediastinum, vagina, and brain. We report a case of primary EST of the omentum and to our knowledge it is the first case of omental EST in the literature. A 45-year-old woman with a history of abdominal distension was treated with total abdominal hysterectomy with bilateral salpingo-oophorectomy and infracolic omentectomy, followed by four cycles of BEP (bleomycin, etoposide, cisplatin) combination chemotherapy. Microscopically, the tumor exhibited typical patterns of EST and stained for alpha-fetoprotein and cytokeratin. She has remained free of disease for 10 months of follow-up. According to previous studies, debulking surgery and BEP chemotherapy were used as primary therapy with good results. The subject of extragonadal EST is reviewed, and the possible histogenesis of this tumor at such a rare site is discussed.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/158. Conservative surgery in a young patient with peritoneal psammocarcinoma.Psammocarcinoma is a rare epithelial neoplasm of the ovary and peritoneum. The reported management of patients with this tumor includes radical surgery and chemotherapy. We report the case of a young woman with metastatic psammocarcinoma treated with conservative surgery who is alive 6.5 years following positive second-look laparotomy.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
3/158. Primary peritoneal psammocarcinoma: A case presenting with an upper abdominal mass and elevated CA-125.Primary peritoneal serous adenocarcinoma with predominating psammoma bodies, psammocarcinoma, is a very rare tumor with only seven cases documented in the English literature. Pathological classification of this entity was established in 1990 and clinical behavior of this tumor is uncertain. Based on limited data these tumors appear to behave similarly to low malignant potential tumors of the ovary. This case describes a 59-year-old woman who underwent exploratory laparotomy for a large upper abdominal cystic mass. Findings included a large tumor mass involving the gastrocolic omentum and dense small bowel adhesions. The patient had normal ovaries and was debulked to no macroscopic disease. Final pathologic diagnosis confirmed a stage IIIC primary peritoneal psammocarcinoma. The patient has received no adjunctive therapy and is without evidence of disease 2 years after surgery. Primary peritoneal psammocarcinoma is a neoplasm which can mimic serous adenocarcinoma of the ovary. In contrast, primary peritoneal psammocarcinoma appears to behave in an indolent fashion. Primary surgical debulking should be attempted, while the utility of postoperative chemotherapy remains unknown.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
4/158. Multiple nodular metastases in mesenteric panniculitis by uterine papillary serous adenocarcinoma (UPSC): CT appearance of a case.Intra-abdominal panniculitis is a thickening of the mesentery of the small/large intestine due to infiltration of lipid-laden macrophages associated with a variable amount of fibrosis. This condition is rarely associated with malignant neoplasms. We report the computed tomography (CT) findings of a patient treated for uterine papillary serous adenocarcinoma (UPSC). She had mesenteric panniculitis where metastatic tumor nodules implanted. This was the only intraperitoneal recurrence. To our knowledge, no such finding has been reported in the gynecologic and radiologic literature to date. On CT images, the differential diagnosis is with cystic dilatations of mesenteric lymph vessels.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
5/158. pseudomyxoma peritonei with high serum CA19-9: report of three cases.pseudomyxoma peritonei (PMP) is an unusual form of intraabdominal neoplasm that produces a large amount of extracellular mucin. It is often associated with mucinous tumors of gastrointestinal tract or ovary. Herein, we report 3 patients with pseudomyxoma peritonei with high serum carbohydrate antigen 19-9 (CA19-9) levels. The first patient, who had a CA19-9 level of 1132 U/ml, had well-differentiated rectal cancer and died of chemotherapy complications, pneumonia and septic shock; one month after admission. The other 2 cases with CA19-9 levels of 2520 U/ml and 679 U/ml had tumors of unknown origins and had survived more than 1 year and 3 months after treatment, respectively. Usually, elevated serum CA19-9 levels are found in patients with pancreatic, biliary, colorectal, gastric or liver cancers. However, many studies have shown high serum CA19-9 levels are associated with mucinous carcinoma. Immunochemical studies also showed positive staining of CA19-9 in mucinous tumors. PMP is composed of large amounts of mucin, therefore, we suggest that serum and ascites CA19-9 levels should be routinely checked in patients with PMP.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
6/158. laparoscopy and mesothelioma.Malignant mesothelioma is a well-recognized long-term sequela of chronic asbestos exposure. asbestos use in the united states began in the 1950s and was widespread until the mid-1970s. Although currently only 2.2 cases per million population per year are diagnosed, disease incidence is increasing because of the long latency of this neoplasm. A latency of 15-50 years means that a higher incidence of this neoplasm can be anticipated in the future. The authors report a patient with peritoneal mesothelioma and no known prior exposure to asbestos. The diagnosis was confirmed by exploratory laparoscopy, which entailed biopsies of the diaphragm and of the peritoneal and abdominal walls, and by cytologic evaluation of 700 ml ascitis fluid. At present, exploratory laparoscopy offers the quickest, safest, and least invasive way to confirm the clinical diagnosis of peritoneal malignant mesothelioma.- - - - - - - - - - ranking = 2keywords = neoplasm (Clic here for more details about this article) |
7/158. Clear cell sarcoma of the abdominal wall with peritoneal sarcomatosis: CT features.Clear cell sarcoma, also called malignant melanoma of soft parts, is an uncommon neoplasm that involves tendons or aponeuroses of the lower extremity. The CT features of a clear cell sarcoma arising from the abdominal wall with later peritoneal dissemination are described. Peritoneal sarcomatosis from soft tissue sarcomas is a very rare condition previously unreported in the radiologic literature. Metastases to peritoneal surfaces must therefore be considered a possible site for systemic dissemination of soft tissue sarcomas.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
8/158. Mucinous epithelial cysts of the spleen associated with pseudomyxoma peritonei.AIMS: We report two rare cases of neoplastic pseudomyxoma peritonei associated with splenic mucinous epithelial cysts and review previously reported cases of splenic mucinous lesions in order to investigate the extent and implications of such an association. methods AND RESULTS: The majority of mucinous lesions of the spleen appear to be associated with pseudomyxoma peritonei. The clinicopathological profile of these cases conforms to that of neoplastic pseudomyxoma peritonei, showing a similar age of onset, outcome and histological features. Most of the cases were associated with a confirmed or suspected appendiceal primary. The immunophenotype (cytokeratin 7 negative; cytokeratin 20 and CEA positive) of the lesions of both our cases, including those in the ovary, was suggestive of a gastrointestinal origin. CONCLUSIONS: splenomegaly due to cystic intrasplenic mucinous epithelial lesions may occasionally be the presenting feature of pseudomyxoma peritonei or herald tumour recurrence. Mucinous epithelial cysts of the spleen may also precede the development of pseudomyxoma peritonei. All cases of pseudomyxoma peritonei should be investigated for splenic involvement and, conversely, a primary mucinous neoplasm sought elsewhere in the abdomen in all cases of splenic mucinous cysts.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
9/158. Dissemination of latent colon adenocarcinoma after laparoscopic cholecystectomy.The seeding of neoplasms at trocar sites has been reported with increasing frequency. A case is presented of a 68 year-old woman with metastatic seeding of nondiagnosed colon cancer at the umbilical trocar site used for a laparoscopic cholecystectomy. Histopathological examination showed metastatic adenocarcinoma probably of gastrointestinal origin. A colonoscopy performed at the same time revealed a 2-cm lesion at the hepatic flexure which was shown histologically to be a differentiated adenocarcinoma. Diffuse peritoneal carcinomatosis was also found on computerised tomography. It is presumed that the primary colon cancer existed prior to cholecystectomy.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
10/158. Cystic peritoneal mesothelioma: report of a case.Peritoneal mesothelioma is a rare disease, especially when it arises in a cystic form with tardive and often nonspecific symptoms. While diffuse neoplasms have an unfavorable prognosis, cystic forms are usually benign. An accurate diagnosis can only be made only with electron microscopy and immunohistochemical studies. A 92-year-old woman with an ultrastructurally ascertained cystic peritoneal mesothelioma was admitted to the hospital's emergency ward, and was considered to be unusual because of the size of the mass and the patient's age. A review of the literature is made, and the clinical and diagnostic aspects of this disease are also discussed.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
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