• Homero Oliveira de Arruda, Hudson de Lima, and Valdemar Ortiz.
• Department of Urology, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, Brazil. arrudas@dglnet.com.br
• Sao Paulo Med J. 2007 Mar 1; 125 (2): 124125124-5.

ContextOssification in the human penis is such a rare condition that only 34 histologically evident cases have previously been reported. Among several conditions that have been correlated with this problem the most frequent is Peyronie disease. In all these conditions, human penile ossification appears to be a metaplastic bone formation process.Case ReportA 59-year-old white man presented with a one-year history of slight pain upon erection and during intercourse. He also complained of hard plaque near the base of the penis. One year earlier, he had sustained blunt trauma during intercourse. Examination of the penis revealed a fixed firm mass extending over the proximal third of the penile shaft, measuring 3.0 x 3.0 x 2.0 cm and involving the corporal sponge, without surface extension. There was no impotence or other relevant clinical finding. Radiography on the penis revealed irregular calcification in the same position as the palpable mass and in the septum of the proximal inner third of the penis. The importance of this report lies in the extent of the human penile ossification, as demonstrated by the radiological and histological confirmation.

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