Back issues No.2 - 1996 / Case Report  

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Median Raphe Canals of the Genitoperineum
Cheng-Kun Wang, J. Yu-Yun Lee, Hui-Peng Huang
Dermatol Sinica 14: 95-99, 1996

Congenital anomalies of the genitoperineal median raphe are uncommon. They manifest cysts and canals which may occur at any point along the median raphe extending from the glans penis to the anus. Though usually asymptomatic, median raphe canals (MRCs) may become infected by gonococcus or S. aureus resulting in swelling, tenderness and purulent discharge. MRCs are almost always lined by squamous epithelium. We report an unusual case of MRC occurring in a 4-month-old boy. The lining was of the rare transitional epithelium type with focal squamous metaplasia. We review the English-languaged literature of canals of the genitoperineal raphe and outline the features differentiating the median raphe canals from the median raphe cysts.

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