Fig. 11

Partial segmental thrombosis of the corpus cavernosum. A 51-year-old patient, an avid mountain biker, developed a painful palpable lump in the perineum after several hours of riding his bike. US (a) shows a swollen, non-compressible right corpus cavernosum (arrow), lacking vascularisation at CEUS (b), consistent with partial segmental thrombosis of the corpus cavernosum. Diagnosis is straightforward considering history (repeated perineal microtraumas) and US features. Confirmatory MRI, however, has been done, showing a hypointense on T2WI (c, d), non-enhancing (e, f) thrombus in the crus of the right corpus cavernosum which is divided into two parts by a web (arrowhead). This is a well-known predisposing factor for partial segmental thrombosis