Pigmented lesion on the back. Pigmented hidroacanthoma simplex (HS) (intraepidermal acrospiroma).
Vélez
A
A
Hospital Universitario San Carlos, Madrid, Spain.
del Río
E
E
Martín
N
N
Sánchez Yus
E
E
D018250:Acrospiroma / Q000473:pathology*; D000368:Aged; D001415:Back; D006801:Humans; D008297:Male; D013544:Sweat Gland Neoplasms / Q000473:pathology*