Classical mycosis fungoides is the most common type of mycosis fungoides (MF), a form of cutaneous T-cell lymphoma, and is characterized by slow progression from patches to more infiltrated plaques and eventually to tumors. The disease is Monarch Disease Ontology term MONDO_0009691 (mycosis fungoides). Also known as: CTCL/ mycosis fungoides, MF, cutaneous T-cell lymphoma/mycosis fungoides, mycosis fungoides (morphologic abnormality), mycosis fungoides NOS (morphologic abnormality), mycosis fungoides lymphoma, mycosis fungoides of unspecified site, mycosis fungoides, Alibert-Bazin type.