A 46-year-old man, with no history of pathology of interest except vasectomy at the age of 42, presented to the emergency department for a perineal tumour of insidious onset and progressive increase in size over the last few days, with no repercussions on erectile capacity or urination. He categorically denied any history of trauma. On examination, he had a perineal tumour in the left paracavernosal region, non-fluctuant, non-painful, of fibroelastic consistency.
Soft tissue ultrasound was performed with diagnostic orientation towards perineal haematoma dependent on the proximal portion of the left corpus cavernosum.
Nuclear magnetic resonance imaging showed a hypointense area of approximately 8x2x0.8 cm located in the posterior region of the left corpus cavernosum with integrity of the tunica albuginea and Buck's fascia.

Bacteriological study of material obtained by puncture was performed with negative culture.
Oral antiplatelet treatment and physical measures were administered, with reabsorption of the haematoma and complete resolution after 4 months.

