label: ALK-Positive Large B-Cell Lymphoma
label_lc: alk-positive large b-cell lymphoma
description: "A usually aggressive large B-cell lymphoma characterized by the presence of monomorphic immunoblast-like neoplastic B-lymphocytes in a sinusoidal growth pattern.  The neoplastic B-lymphocytes express the ALK kinase but they lack the 2;5 translocation."