title: Porokeratosis ptychotropica of the scrotum: dermoscopic evaluation of an atypical presentation.
abstract: Porokeratosis ptychotropica is a rare variant of porokeratosis that is classically located on the gluteal and perianal regions, seldom extending to the genitalia. The authors report an atypical presentation of porokeratosis ptychotropica and discuss the use of dermoscopy in evaluating this dermatosis. Dermoscopic findings, although not specific to this variant of porokeratosis, are helpful in the differential diagnosis of other genital disorders. Histopathology, through the visualization of multiple cornoid lamellae, prevails as the gold standard for the definite diagnosis of porokeratosis ptychotropica.
authors: Centro Hospitalar de Lisboa Central, Hospital de Santo António dos Capuchos, Lisboa, PT.
authors: Joana
authors: J
authors: Cabete
authors: Centro Hospitalar de Lisboa Central, Hospital de Santo António dos Capuchos, Lisboa, PT.
authors: Ana
authors: A
authors: Fidalgo
authors: Centro Hospitalar de Lisboa Central, Hospital de Santo António dos Capuchos, Lisboa, PT.
authors: André
authors: A
authors: Lencastre
authors: Centro Hospitalar de Lisboa Central, Hospital de Santo António dos Capuchos, Lisboa, PT.
authors: Filipa
authors: F
authors: Diamantino
authors: Centro Hospitalar de Lisboa Central, Hospital de Santo António dos Capuchos, Lisboa, PT.
authors: Alexandre
authors: A
authors: João
mesh_terms: D000328:Adult; D001706:Biopsy; D046169:Dermoscopy / Q000379:methods*; D003937:Diagnosis, Differential; D005832:Genital Diseases, Male / Q000473:pathology*; D006801:Humans; D008297:Male; D017499:Porokeratosis / Q000473:pathology*; D015203:Reproducibility of Results; D012611:Scrotum / Q000473:pathology*