Anaplastic Lymphoma Kinase positive large B cell lymphoma of ileocaecal mesentery: A case report.

ALK+ large B cell lymphoma (LBCL) is a very rare aggressive neoplasm. It accounts for less than 1% of diffuse large B cell lymphoma (DLBCL). This is a case report of ALK+ DLBCL in a 34-year-old woman with an ileocaecal mesenteric mass.