%0 Journal Article
%T Conundrum of a Large Bowel Neoplasm: Collision Tumor
%A Antonio R. Soto
%A Doris H. Toro
%A Ekie G. Vazquez
%A Nicole M. Grigg-Gutierrez
%A Priscilla Magno-Pagatzaurtundua
%A William C¨¢ceres
%J Archive of "ACG Case Reports Journal".
%D 2018
%R 10.14309/crj.2018.13
%X A 79-year-old Hispanic man was admitted to the intensive care unit with symptomatic iron-deficiency anemia and watery diarrhea. Radiological images revealed diffuse colonic wall thickening, a soft-tissue fullness in the ascending colon, and multiple mesenteric lymphadenopathies. Colonoscopy showed multiple aphthous ulcers throughout the colon and a large deep ulcer with irregular raised borders in the rectosigmoid area. Histological exam of the ulcers showed severe ulcerative colitis, while biopsy of the deep ulcer revealed a well-differentiated adenocarcinoma. Colectomy specimen was consistent with colliding diffuse large B-cell lymphoma and adenocarcinoma
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5814571/