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

Correct Answer: C

Rationale: The presence of an irregular, asymmetric, hard nodule on the posterior surface of the prostate detected during digital rectal examination raises suspicion for prostate cancer. Prostate cancer commonly presents with nodules or indurations on the prostate gland during physical examination. Other findings, such as no inflammation, masses, or fissures in the anus and normal examinations of the scrotum and penis, further support the likelihood of prostate cancer as the most probable diagnosis in this case. Additional laboratory results, including prostate-specific antigen (PSA) levels, can help confirm the diagnosis. Both benign prostatic hyperplasia (BPH) and prostatitis typically present with different symptoms than those described in the scenario, making prostate cancer the most likely disorder based on the provided information. Anorectal cancer is less likely given the absence of findings indicating involvement of the anus or rectum in this case.

Correct Answer: B

Rationale: The clinical presentation described involves a patient with pericarditis. Pericarditis is inflammation of the pericardium, the sac surrounding the heart, which can lead to characteristic findings such as a scratching noise heard on auscultation, leaning forward relieving pain, and normal lung examination findings. The presence of pericarditis can also lead to a pericardial friction rub, which is often described as a scratching or grating sound heard best at the lower left sternal border.

Correct Answer: B

Rationale: Asking Mr. Q. when his last drink was is an open-ended question that can provide valuable information regarding his alcohol consumption patterns. This question allows Mr. Q. to disclose whether he has been drinking recently and can help determine the frequency and quantity of his alcohol consumption. It avoids leading or judgmental language, which can help build rapport and facilitate a more honest conversation about his alcohol use. By knowing when his last drink was, you can better assess the potential impact of alcohol on his current symptoms of fatigue and further explore any potential issues related to alcohol abuse.

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.