title: Primary diffuse large B-cell lymphoma of the ascending colon.
abstract: Primary colorectal lymphoma is a rare malignancy accounting for 3% of all gastrointestinal lymphomas and 0.1-0.5% of all colorectal malignancies. Among primary colorectal lymphomas, the most common histological subtype of colorectal lymphoma is diffuse large B-cell lymphoma. We report a case of an 84-year old Caucasian female who was admitted to the hospital because of a 2 days history of altered mental status. In the emergency department the patient was found to have acute kidney injury and hypercalcemia. On physical examination a large lower quadrant abdominal mass was palpated. Computed tomography scan of abdomen confirmed the presence of a mass along the cecum and proximal ascending colon. Colonoscopy showed a large ulcerated mass and biopsy was consistent with diffuse large B-cell lymphoma. The patient underwent colectomy but refused to receive chemotherapy.
authors.affiliation: Departments of Internal Medicine.
authors.forename: Aram
authors.initials: A
authors.lastname: Barbaryan
authors.forename: Alaa M
authors.initials: AM
authors.lastname: Ali
authors.forename: Shawn G
authors.initials: SG
authors.lastname: Kwatra
authors.forename: Raya
authors.initials: R
authors.lastname: Saba
authors.forename: Suartcha
authors.initials: S
authors.lastname: Prueksaritanond
authors.forename: Nasir
authors.initials: N
authors.lastname: Hussain
authors.forename: Aibek E
authors.initials: AE
authors.lastname: Mirrakhimov
authors.forename: Natalya
authors.initials: N
authors.lastname: Vladimirskiy
authors.forename: Teresita
authors.initials: T
authors.lastname: Zdunek
authors.forename: Alan D
authors.initials: AD
authors.lastname: Gilman
keywords: abdominal mass; diffuse large B-cell lymphoma; gastrointestinal lymphoma; hypercalcemia; lymphoma