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Ascending Colon Schwannoma an Unusual Cause of Acute Lower Gastrointestinal Bleeding. 2017

Hassan Turaihi, and Jed H Assam, and Matthew Sorrell
Department of Surgery, University of South Dakota Sanford School of Medicine.

This is a case report of a 61-year-old female who presented with acute lower gastrointestinal bleeding resulting from a schwannoma involving the ascending colon. The patient was successfully treated with laparoscopic hemicolectomy. Schwannoma involving the large bowel is a rare entity; only around 90 cases of colonic schwannomas are reported in world literature. Although the vast majority of these tumors demonstrate a slow growing and benign profile, recurrence and malignant transformation can occur. Given the exceptional rarity of this pathological process, much of what is currently understood about this disease comes from case studies. Continued reporting of this pathology will be essential for further development and understanding its clinical and pathologic presentation.

UI MeSH Term Description Entries
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009442 Neurilemmoma A neoplasm that arises from SCHWANN CELLS of the cranial, peripheral, and autonomic nerves. Clinically, these tumors may present as a cranial neuropathy, abdominal or soft tissue mass, intracranial lesion, or with spinal cord compression. Histologically, these tumors are encapsulated, highly vascular, and composed of a homogenous pattern of biphasic fusiform-shaped cells that may have a palisaded appearance. (From DeVita Jr et al., Cancer: Principles and Practice of Oncology, 5th ed, pp964-5) Neurinoma,Schwannoma,Schwannomatosis, Plexiform,Neurilemoma,Neurilemmomas,Neurilemomas,Neurinomas,Plexiform Schwannomatoses,Plexiform Schwannomatosis,Schwannomas
D003110 Colonic Neoplasms Tumors or cancer of the COLON. Cancer of Colon,Colon Adenocarcinoma,Colon Cancer,Cancer of the Colon,Colon Neoplasms,Colonic Cancer,Neoplasms, Colonic,Adenocarcinoma, Colon,Adenocarcinomas, Colon,Cancer, Colon,Cancer, Colonic,Cancers, Colon,Cancers, Colonic,Colon Adenocarcinomas,Colon Cancers,Colon Neoplasm,Colonic Cancers,Colonic Neoplasm,Neoplasm, Colon,Neoplasm, Colonic,Neoplasms, Colon
D005260 Female Females
D006471 Gastrointestinal Hemorrhage Bleeding in any segment of the GASTROINTESTINAL TRACT from ESOPHAGUS to RECTUM. Hematochezia,Hemorrhage, Gastrointestinal,Gastrointestinal Hemorrhages,Hematochezias
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D044682 Colon, Ascending The segment of LARGE INTESTINE between the CECUM and the TRANSVERSE COLON. It passes cephalad from the cecum to the caudal surface of the right lobe of the LIVER where it bends sharply to the left, forming the right colic flexure. Ascending Colon,Hepatic Flexure,Right Colic Flexure,Colic Flexure, Right,Flexure, Hepatic

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