Anaplastic Large Cell Lymphoma ALK-Negative: About a Rare Pediatric Case Report

Anaplastic Large Cell Lymphomas (ALCL) are rare in childhood but clinically aggressive. The contemporary World Health Organization (WHO) classification of hematologic malignancies recognizes two distinct subtypes of systemic ALCL: Anaplastic Lymphoma Kinase (ALK)-negative, and ALK-positive. We report a rare pediatric observation of cutaneous nodule revealing an Anaplastic Large Cell Lymphoma (ALCL) ALK - cutaneous, muscular and ganglionic. It was classified according to who classification, treated by polychemotherapy with good outcome. ALCL encompasses several distinct clinicopathologic entities with unique genomic under printing. This rare pediatric observation of ALCL presents a new discussion on a pathology still incompletely known.