Douglass Hanly Moir Pathology

Storiform Collagenomas With Unusual Morphology: Expanding the Histologic Spectrum in Two Molecularly Proven Cases

ABSTRACT Storiform collagenoma is a rare benign dermal neoplasm recently shown to harbor concurrent PTEN and PDGFRB mutations. While most are sporadic, a subset occurs in the context of Cowden syndrome. We describe two storiform collagenomas with unusual morphology including infi...