Palisading granulomas of the prostate associated with prior prostatic surgery.

We report a case of a unique granulomatous lesion of the prostate and recurrent bladder neck obstruction. The lesion was histologically identical to a rheumatoid nodule and it has only been seen in patients who have undergone prior prostatic surgery. There appears to be no clinical correlation with connective tissue disease, and the lesion differs clinically and morphologically from other types of granulomatous prostatitis.