types

Last reviewed 01/2018

Eccrine poroma is believed to have a number of variants:

• malignant eccrine poroma:
• may arise de novo or from transformation of a benign eccrine poroma
• anaplastic cells showing pagetoid spread but still containing glycogen
• metastasis is common
• eccrine poromatosis: multiple lesions on the palms and soles
• acrosyringeal naevus: linear lesion on leg