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Well-defined thick altered signal track is seen in the midline perineal region. After administration of contrast the track shows heterogeneous enhancement with nonenhancing internal components. The lesion causes slight right lateral displacement of the urethra and corpora spongiosa. The track measures approx 7.0 (AP) x 3.0 (TR) x 1.7 (SI) cm.
The track is seen in the anterior perineal region. It is seen at periurethral region and base of penis. The lesion is seen adjacent to the corpora spongiosa and indentation the corpora cavernosa. Anteriorly the lesion is seen on the antero-inferior aspect of pubic symphysis upto the base of penis in midline perineum.
Posteriorly the lesion is extends in the midline ischio-anal fossa and into the intersphincteric region at 12 O’clock position. There is suspicious internal opening into the anal canal at 12 O’clock position. No obvious external opening is demonstrated.
There is subtle marrow edema in the inferior pubic ramus on left side.