Which condition causes the formation of biliary sludge?

Choice A reason: Testicular torsion is a condition where the spermatic cord twists, cutting off the blood supply to the testicle. It is not a common complication of prostate surgery but rather an acute, emergent condition affecting the testes.
Choice B reason: Erectile dysfunction is a potential complication of prostate surgery, particularly radical prostatectomy, due to the proximity of the nerves controlling erection. Nerve-sparing techniques are often used to minimize this risk, but some degree of dysfunction may still occur.
Choice C reason: Cystitis, an inflammation of the bladder, is not typically a direct complication of prostate surgery. While urinary issues can occur postoperatively, cystitis is more commonly associated with infections rather than surgical outcomes.
Choice D reason: Paralytic ileus, a temporary paralysis of the bowel, can occur after abdominal surgeries, including prostate surgery. However, it is not as specific to prostatectomy as erectile dysfunction.

Choice A reason: Wearing an external collection bag is typically associated with other types of urinary diversions, such as an ileal conduit, not a neobladder.
Choice B reason: A neobladder involves the creation of an internal pouch from a segment of the intestine that stores urine and allows for more natural urination, similar to the function of a natural bladder. This option provides the ability to void through the urethra.
Choice C reason: While some initial incontinence can occur after neobladder surgery, the goal is to eventually have voluntary control over urination with time and practice.
Choice D reason: Having a stoma located in the abdomen is characteristic of an ileal conduit or urostomy, not a neobladder. The neobladder is designed to avoid the need for an external stoma.