Monarch Disease Ontology identifier MONDO_0005813 (interdigitating dendritic cell sarcoma) is a neoplastic proliferation of spindle to ovoid cells which show phenotypic features similar to those of interdigitating dendritic cells. The clinical course is generally aggressive. (WHO, 2008). Also known as: interdigitating Dendritic cell sarcoma, interdigitating Dendritic cell sarcoma/tumor, interdigitating cell sarcoma/tumor.