Lymphoma of the colon and rectum

Primary Colorectal Lymphoma: A Rare Case With a Peculiar Presentation

“…Normal bone marrow biopsy. [2] Our patient was well within these guidelines, hence the diagosis of PCL was made. Of all NHL, GIT NHL constitutes only 5 %.…”

“…Among this, colorectal region constitutes only 10 to 20 % of the cases. [2], [1] Colorectal lymphomas comprise less than 0.6 % of all colorectal tumours (2). The peak age of occurrence is 50 to 65 years.…”

“…[1] Second common site is the ampullary region of rectum probably due to retention of intestinal contents at this site. [2] Here we present an interesting case of primary colorectal lymphoma involving the rectosigmoid junction, rectum and anal canal.…”

Ki-1 anaplastic large-cell lymphoma occurring at the site of ileocolonic anastomosis in a patient treated surgically for colonic adenocarcinoma: Case report and review of the literature

“…48 However, other studies found rearrangements in as few as two of 19 (11%) of ALCL cases. 1 The gut is the most common site of all primary extranodal lymphoma, 49 accounting for roughly 5% of non-Hodgkin's lymphomas 50 ; gastrointestinal lymphoma is nonetheless a rare tumor, with an incidence of 1.6 per million annually. 51 The peak incidence is in the sixth to eighth decades, with a 2:1 male predominance.…”

“…The large majority of colorectal lymphomas localize to the ileocecal valve. 50 In some countries, the proportion of gastrointestinal lymphomas involving the colorectum may be higher-up to 45% in India, for example 52 -suggesting an as yet unidentified environmental or genetic etiology. Acquired immunodeficiency syndrome, immunosuppression, and inflammatory bowel disease are known predisposing conditions.…”