A young doctor, a surgeon, decides to go on a

mission to Africa after his professional exam. He encounters diagnoses and

procedures that are completely unusual for him. One of these diagnoses is

Fournier gangrene. This is a rare but very serious polymicrobial infection of

the male genital tract, leading to gangrene (secondary necrosis) of the soft

tissues of this area. It is a superficial process affecting the skin of the

scrotum or penis (testicles are not affected); the perineum and perianal area

may also be affected. Broad-spectrum antibiotics are given immediately. Urgent

surgical treatment with removal of all dead tissue is also necessary. In the

patient, the extent is so severe that all the skin and subcutaneous tissue of

the scrotum is removed. What tissue lies beneath these layers and forms the

testicular sheath?