Syringocystadenoma papilliferum contiguous to a verrucous cyst.
BACKGROUND
Syringocystadenoma papilliferum (SCAP) and verrucous cyst are two uncommon benign tumors. The simultaneous occurrence of the two lesions has not been reported before.


METHODS
We report four cases of the simultaneous occurrence of the two rare lesions as so-called collision lesions with a review of the literature.


CONCLUSIONS
The relationship of SCAP with viral infection needs further investigation.
Li
Ailing
A
Department of Pathology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71130, USA. ali@lsuhsc.edu
Sanusi
I Daniel
ID
Pena
Jose R
JR
Nopajaroonsri
Charn
C
Kent
Micheal
M
Smoller
Bruce R
BR
D006607:Adenoma, Sweat Gland / Q000473:pathology* / Q000821:virology; D000368:Aged; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000473:pathology* / Q000648:ultrastructure / Q000821:virology; D005260:Female; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D027383:Papillomaviridae / Q000648:ultrastructure; D030361:Papillomavirus Infections / Q000473:pathology*; D016133:Polymerase Chain Reaction; D012871:Skin Diseases / Q000473:pathology* / Q000821:virology; D013544:Sweat Gland Neoplasms / Q000473:pathology* / Q000821:virology; D014412:Tumor Virus Infections / Q000473:pathology; D014860:Warts / Q000473:pathology