1/32. Carcinoma in villous adenoma of ascending colon associated with sarcoid reaction in the regional lymph nodes.A 79-year-old woman was admitted to our hospital due to continuous anal bleeding. colonoscopy showed a huge villous tumor on the middle area of the ascending colon. A typical right colectomy and lymph node dissection were performed. The resected specimen showed a villous type tumor located on the ascending colon. The histopathologic investigation demonstrated a moderately differentiated adenocarcinoma arising in a tubulovillous adenoma and extending to the submucosa. Although there was no evidence of metastatic carcinoma in the dissected lymph nodes, epithelioid cell granulomas with multinucleated giant cells lacking in the central caseous necrosis suggested sarcoid reaction.- - - - - - - - - - ranking = 1keywords = giant (Clic here for more details about this article) |
2/32. Localized giant pseudopolyposis in ulcerative colitis.Localized giant pseudopolyposis is an interesting but unusual manifestation of both ulcerative colitis and Crohn's disease. The purpose of this report is to present a case of localized giant pseudopolyposis complicating an ulcerative colitis, and review other cases reported in the literature. The clinical and pathological findings are described. The authors also discuss the possible aspect of proper management in this type of lesion.- - - - - - - - - - ranking = 6keywords = giant (Clic here for more details about this article) |
3/32. Inflammatory malignant fibrous histiocytoma of the gallbladder: report of a case.We describe herein a case of inflammatory malignant fibrous histiocytoma (IMFH) of the gallbladder that subsequently metastasized to the ascending colon and later to the stomach. A 70-year-old Japanese man with a palpable mass in the right upper quadrant of the abdomen was referred to our hospital for investigation and treatment. Laboratory data showed severe leukocytosis and elevated serum granulocyte colony-stimulating factor (G-CSF) concentrations. A laparotomy was performed, and the tumor was excised en bloc with the gallbladder and part of the liver bed. Histopathologically, the tumor was composed of ordinary malignant fibrous histiocytoma (MFH) components characterized by pleomorphic tumor cells, bizarre giant cells, and conventional spindle cells in a storiform growth pattern, as well as a xanthogranulomatous component, including inflammatory cells, foamy histiocytes, and plasma cells. Immunohistochemical study revealed that the pleomorphic tumor cells and bizarre giant cells were positive for antibodies against alpha1-antitrypsin and alpha1-antichymotrypsin. The final pathologic diagnosis was IMFH. The tumor cells were diffusely positive for anti-G-CSF monoclonal antibody, and the inflammatory reaction subsided immediately after tumor resection, strongly suggesting that the primary tumor cells produced G-CSF. This patient is still alive with no signs of recurrence more than 3 years after his primary operation, which to our knowledge is the longest survival period ever reported. Therefore, visceral IMFH is manageable in some cases by resecting the primary and isolated metastatic lesions.- - - - - - - - - - ranking = 2keywords = giant (Clic here for more details about this article) |
4/32. Giant inflammatory polyposis of the descending colon associated with a Crohn's disease-like colitis.A case of giant inflammatory polyposis associated with a localized inflammatory bowel disease of the descending colon in a 49-year-old man is presented. Lower abdominal distension rapidly appeared without any previous history of gastrointestinal disease. Two months later, he underwent a left hemicolectomy. Postoperative recovery was complete and he remains in good health more than 2 years later. The resected colon showed a giant and bizarre polyposis measuring up to 12 cm in length and 2 cm in height and covering the entire circumference of the colon. The polyposis consisted of narrow worm- or noodle-like polyps that bridged over the irregularly shaped ulcers, which sometimes extended into muscularis propria. Although longitudinal ulcers or scars, stricture, and a cobble-stone appearance were not observed, transmural inflammation and deep fissures were found in the interpolypoid area. From these findings, this case seems to be more similar to Crohn's disease than other inflammatory bowel diseases.- - - - - - - - - - ranking = 2keywords = giant (Clic here for more details about this article) |
5/32. Giant sigmoid diverticulum causing colonic and urinary obstruction.Diverticulosis of the colon is a fairly common disease, but a solitary giant diverticulum is relatively rare. This case presented with symptoms of urinary and bowel obstruction.- - - - - - - - - - ranking = 1keywords = giant (Clic here for more details about this article) |
6/32. Malignant gastrointestinal leiomyosarcoma and gastrointestinal stromal tumor with prominent osteoclast-like giant cells.CONTEXT: One case of leiomyosarcoma and one case of gastrointestinal stromal tumor with prominent osteoclast-like giant cells have so far been reported in the digestive tract. OBJECTIVE: To ascertain the clinicopathologic features and biologic behavior of these tumors, we report 3 additional cases of leiomyosarcoma of the gastrointestinal tract and one malignant gastrointestinal stromal tumor. DESIGN: Histologic and immunohistochemical examinations were performed. Clinical and follow-up data were recorded, and the literature was reviewed. RESULTS: The age of the patients ranged from 50 to 68 years (mean, 62 years). One of the lesions arose in the stomach, one in the ileum, and 2 in the colon. Three tumors showed a strong positivity for muscle actin and desmin and were diagnosed as leiomyosarcomas, 2 of them showing spindle cells and 1 of them showing epithelioid cells. The fourth tumor reacted strongly positive for c-Kit (CD117) and vimentin, and it was diagnosed as an epithelioid malignant gastrointestinal stromal tumor. All tumors were characterized by numerous osteoclast-like giant cells that were unevenly distributed and that, using immunohistochemistry, reacted strongly with CD68. CONCLUSIONS: Malignant stromal tumors with osteoclast-like giant cells of the gastrointestinal tract are rare entities, are more commonly of a myogenic origin such as leiomyosarcoma, and seem to have an aggressive behavior.- - - - - - - - - - ranking = 7keywords = giant (Clic here for more details about this article) |
7/32. Occult cancer in localized giant pseudopolyposis.Localized giant pseudopolyposis is a rare complication in patients with ulcerative colitis which progresses to a huge intramural polypoid mass. Our case described here is a 30-yr-old female with chronic ulcerative colitis who developed localized giant pseudopolyposis with unexpected infiltrating adenocarcinoma. This case is one of an unusual form of cancer presentation in ulcerative colitis, and it indicates that we should be aware of the possibility of occult adenocarcinoma inside a large pseudopolyposis with no superficial dysplasia.- - - - - - - - - - ranking = 6keywords = giant (Clic here for more details about this article) |
8/32. Metastases from gastric carcinoma to colon in the form of multiple flat elevated lesions: a case report.Gastric carcinoma is a common malignancy worldwide. Advanced stages of the disease may result in metastases to many other organs of the body. However, colonic metastases are rare. We report a case of gastric carcinoma with symptoms of abdominal fullness and weight loss. The serum carcinoembryonic antigen level was elevated. Esophagogastroduodenoscopy revealed giant folds occupying the whole gastric body and poor expansion of the stomach. Histologic examination of biopsy specimens from the giant fold demonstrated poorly differentiated adenocarcinoma with signet ring-cell differentiation. Total colonoscopy revealed five or six discrete flat elevated lesions in the distal transverse, descending, and sigmoid colons. These lesions were characterized by a clear margin of 3-5 mm in diameter and erosions on the tips. Polypectomy specimens demonstrated signet ring-cell carcinoma, which was histologically similar to the specimens taken from the gastric lesion. We conclude that this was a rare case in which gastric signet ring-cell carcinoma had metastasized to the colon in the form of flat elevated lesions, combined with rapid and wide lymphatic spread to the thorax and abdomen in a clinical course as short as 46 days.- - - - - - - - - - ranking = 2keywords = giant (Clic here for more details about this article) |
9/32. Multiple and giant mandibular osteomas in a Gardner's syndrome. Case report.Though rare, Gardner's syndrome is a systemic disease with frequent jawbones involvement. Dento-maxillo-facial lesions both in early and in advanced stages should be known by dentists and other specialists. In fact, these lesions should be sought in patients with intestinal polyposis, while they could be the first sign of Gardner's syndrome not yet diagnosed.- - - - - - - - - - ranking = 4keywords = giant (Clic here for more details about this article) |
10/32. adult descending colocolic intussusception caused by a large lipoma.adult intussusception is uncommon and varies considerably from the more common occurrence of this disorder in infants and children. Although lipoma represents the most common benign tumor of the colon, it is a relatively rare cause of gastrointestinal symptoms. A rare case of adult intussusception of the descending colon caused by a giant lipoma is presented and discussed.- - - - - - - - - - ranking = 1keywords = giant (Clic here for more details about this article) |
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