Multiple trichodiscomas: histogenetical observations.
A 23-year-old man with multiple trichodiscomas on his face is described. Four papules were histologically examinated, and all of them showed similar findings, a dermal fibrovascular proliferation with abundant ground substance between collagen bundles and an absence of elastic fibers. We found no evidence to establish a relationship between trichodiscomas and hair disk, and, in our opinion, these lesions should be included into the spectrum of hyperplasia of the adventicial dermis.
Requena
L
L
Departamento de Dermatología, Hospital Universitario San Carlos, Facultad de Medicina, Universidad Complutense, Madrid, Spain.
Schöendorff
C
C
López
M J
MJ
Yus
E S
ES
D000328:Adult; D003094:Collagen / Q000648:ultrastructure; D004547:Elastic Tissue / Q000473:pathology; D005148:Facial Dermatoses / Q000473:pathology*; D006201:Hair Diseases / Q000473:pathology*; D006222:Hamartoma / Q000648:ultrastructure*; D006801:Humans; D006965:Hyperplasia; D008297:Male; D008854:Microscopy, Electron
D003094:Collagen