Cases reported "Peritoneal Neoplasms"

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1/238. 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.
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keywords = neoplasm
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2/238. dermatomyositis and peritoneal papillary serous carcinoma.

    We describe an unusual case of peritoneal papillary serous carcinoma (PPSC) arising in a female patient with dermatomyositis (DM). Despite periodic extensive searches for an underlying malignancy, no malignancy had been detected in this patient during the first 2.5 years after the diagnosis of DM. It was only when the patient presented with pleural effusion and ascites that the underlying intra-abdominal malignancy was detected by laparoscopy. Treatment with four cycles of pre-operative chemotherapy (taxol and cisplatin) resulted in tumor regression with amelioration in the muscular manifestation of the DM, but without parallelic amelioration in the skin manifestations of the DM. Explorative laparotomy confirmed the presence of papillary serous carcinoma in the omentum, surface of the left ovary and the retroperitoneal lymph nodes, and established the diagnosis of PPSC. Following two cycles of postoperative chemotherapy, the patient is alive with no evidence of internal malignancy. However, although muscle strength and enzymes have remained normal, no effect on the skin manifestation of DM has been observed. This case illustrates that, alongside the more frequently occurring ovarian carcinoma, PPSC should also be considered in the differential diagnosis of the underlying malignancy that may occur in the female patient with DM.
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ranking = 0.12062463790141
keywords = malignancy
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3/238. 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.
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4/238. 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.
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keywords = neoplasm
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5/238. Hazards of laparoscopic adrenalectomy for Conn's adenoma. When enthusiasm turns to tragedy.

    A 74-year-old man with primary aldosteronism had a small tumor (27 x 23 mm) of his right adrenal gland successfully removed by a transperitoneal laparoscopy. Despite absence of malignancy in the resected tumor and complete relief of all symptoms in the immediate postoperative period, recurrence occurred 6 months later. The tumor behaved as a carcinoma spread in the peritoneal cavity, and the patient eventually died with peritoneal carcinomatosis. We suggest that the laparoscopic technique coupled with pneumoperitoneum may have favored this recurrence.
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ranking = 0.024124927580282
keywords = malignancy
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6/238. 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.
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ranking = 1
keywords = neoplasm
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7/238. 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.
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8/238. 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.
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ranking = 2
keywords = neoplasm
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9/238. 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.
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keywords = neoplasm
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10/238. Sclerosing mesenteritis involving the pancreas: two cases of a rare cause of abdominal mass mimicking malignancy.

    Two patients presented with abdominal pain and weight loss and each was found to have an abdominal mass involving the pancreas and small bowel mesentery. In both cases a malignant process was suspected clinically, radiologically and surgically. Multiple biopsy specimens in both patients showed dense fibrosis, chronic inflammation and fat necrosis with pancreatic infiltration. Histological opinions included the differential diagnosis of retroperitoneal fibrosis but, with the knowledge of the presence of localized masses, these cases were eventually considered to be due to sclerosing mesenteritis. Direct involvement of the pancreas has not previously been highlighted and led to diagnostic difficulty. Both patients have responded to treatment with corticosteroids. Interestingly, one of the patients subsequently developed a tubulo-interstitial nephritis, which has not previously been reported as associated with sclerosing mesenteritis. This has also responded to corticosteroid treatment.
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ranking = 0.09649971032113
keywords = malignancy
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