That is the case of the hematocele, which results from the accumulation of blood within the vaginal sac, usually as a consequence of trauma.
In our patient, the etiology of the hematocele was unknown, in the absence of predisposing conditions or previous trauma.
The differential diagnosis of a firm, painless scrotal mass should include the possibility of a rare chronic hematocele, even in absence of trauma.
Chronic hematocele complicating renal failure and hemodialysis.
Idiopathic superinfected giant hematocele. Actas Urol Esp 2003;27:645-8.
A case of chronic scrotal hematocele. Hinyokika Kiyo 1995;41:817-9.