Correct Answer: B

Rationale: A varicocele is a common cause of a "bag of worms" feeling in the scrotum. It occurs due to the dilation of the veins within the spermatic cord, leading to a palpable mass above the testicle. Varicoceles are more commonly found on the left side due to the anatomy of the left testicular vein, which drains into the left renal vein at a right angle, making it more susceptible to increased pressure and dilation.

Correct Answer: B

Rationale: The patient's history of swimming and presenting symptoms of ear pain, drainage, and manipulation tenderness are suggestive of external otitis, commonly known as swimmer's ear. External otitis is an infection of the outer ear canal, which can be caused by prolonged moisture exposure, trauma, or bacterial/fungal infections. The narrowed and erythematous canal with white debris is characteristic of this condition. Otitis media (Choice A) typically presents with deep ear pain, hearing loss, and sometimes fever, but does not involve the ear canal. Perforation of the tympanum (Choice C) would present with sudden relief of pain and possible drainage from the ear. Cholesteatoma (Choice D) is characterized by a painless cyst or mass in the middle ear, not presenting with these acute ear canal symptoms.

Correct Answer: A

Rationale: The most appropriate amount for a weekly weight reduction goal is typically .5 to 1 pound per week. This rate of weight loss is considered safe and sustainable in the long term. Losing weight too quickly (options B, C, D) can be harmful to your health and may lead to muscle loss, nutritional deficiencies, and a slow metabolism. Rapid weight loss is also harder to maintain in the long run. Gradual weight loss of .5 to 1 pound per week allows for healthy changes to diet and exercise habits, making it more likely to be maintained over time. It is also more likely to result in lasting weight loss and overall improvements in health and well-being.

Correct Answer: A

Rationale: The clinical presentation described is consistent with a Bartholin's gland infection, also known as Bartholin's abscess. The Bartholin's glands are located on each side of the vaginal opening and can become blocked, leading to glandular secretions accumulating and forming an abscess. Symptoms of Bartholin's gland infection include pain, swelling, and tenderness in the vulvar area. The pain can be severe and exacerbated by sitting, similar to what the patient is experiencing. On examination, a red, tense swelling to the side of the introitus is a characteristic finding.

Correct Answer: A

Rationale: Rectal prolapse occurs when the rectum protrudes through the anus. It typically appears as a moist, pink mass that protrudes outside the body. The prolapse is usually painless and can be seen and felt by the patient or the examiner. It is commonly seen in elderly individuals, especially women, and those with conditions like chronic constipation, pelvic floor weakness, or dementia. On the other hand, external hemorrhoids are swollen veins located around the anus, usually painful and may cause bleeding. Perianal fistula is an abnormal tunnel-like connection between the skin near the anus and the rectum, which can cause pain and discharge. Prolapsed internal hemorrhoids are internal hemorrhoids that have descended outside the anal canal and may require manual reduction. Given the symptoms described in the scenario - a moist pink mass protruding from the anus that is nontender and soft without bleeding - the most likely diagnosis is rectal prol