Normal width of the head of the epididymis?

Normal width of the head of the epididymis?

• A. 5-7 mm
• B. 2-3 mm
• C. 10-12 mm
• D. 15-20 mm

Answer: (C)

The head of the epididymis is the widest part of the epididymis and is normally about 1 cm in diameter. In adult scrotal ultrasound, a width around 10–12 mm is considered normal for the head, which is why this option is the best choice. Values much smaller, like 2–3 mm, would be unusually narrow for a normal head, and while 5–7 mm can be seen in some individuals, it’s not the typical standard cited for a normal head. A width of 15–20 mm would be enlarged and could indicate pathology such as inflammatory enlargement or a mass. When measuring, ensure you capture the widest point of the head in a plane perpendicular to its long axis for accuracy.

The head of the epididymis is the widest part of the epididymis and is normally about 1 cm in diameter. In adult scrotal ultrasound, a width around 10–12 mm is considered normal for the head, which is why this option is the best choice. Values much smaller, like 2–3 mm, would be unusually narrow for a normal head, and while 5–7 mm can be seen in some individuals, it’s not the typical standard cited for a normal head. A width of 15–20 mm would be enlarged and could indicate pathology such as inflammatory enlargement or a mass. When measuring, ensure you capture the widest point of the head in a plane perpendicular to its long axis for accuracy.