A 28-year-old musician comes to your clinic, complaining of a "spot" on his penis. He states his partner noticed it 2 days ago and it hasn't gone away. He says it doesn't hurt. He has had no burning with urination and no pain during intercourse. He has had several partners in the last year and uses condoms occasionally. His past medical history consists of nongonococcal urethritis from Chlamydia and prostatitis. He denies any surgeries. He smokes two packs of cigarettes a day, drinks a case of beer a week, and smokes marijuana and occasionally crack. He has injected IV drugs before but not in the last few years. He is single and currently unemployed. His mother has rheumatoid arthritis and he doesn't know anything about his father. On examination you see a young man appearing deconditioned but pleasant. His vital signs are unremarkable. On visualization of his penis there is a 6-mm red, oval ulcer with an indurated base just proximal to the corona. There is no prepuce because of neonatal circumcision. On palpation the ulcer is nontender. In the inguinal region there is nontender lymphadenopathy. What disorder of the penis is most likely the diagnosis?

Correct Answer: C

Rationale: The presentation described in the scenario is consistent with a syphilitic chancre, which is the primary lesion of syphilis. Syphilitic chancres are painless, indurated ulcers that occur at the site of initial infection with Treponema pallidum. These chancres are typically 0.5-2 cm in size, have a clean base, and are often accompanied by regional lymphadenopathy. The red oval ulcer with an indurated base in this patient, along with the absence of pain and presence of lymphadenopathy, is consistent with a syphilitic chancre.

Correct Answer: C

Rationale: The presence of new flat red and purple lesions that are tender on the ulnar aspect of Ms. Whiting's forearms raises concerns and warrants further investigation. Since she did not mention them, it is important to ask how she acquired them to gather more information. This will help determine the cause of the lesions and provide clues to potential underlying conditions or recent activities that could be related to their development. It is important not to dismiss these lesions as old without proper evaluation, as they could indicate a recent injury, infection, or other medical issues that may require attention.

Correct Answer: C

Rationale: The next step would be to discuss the physical therapy plan with Mr. Larson. It is important to communicate openly with him, explain the recommendation for physical therapy, and ensure that he understands and agrees with the plan before proceeding further. This allows for any questions or concerns to be addressed, and ensures that the treatment plan is tailored to his needs and preferences. By discussing the plan with Mr. Larson first, you can also provide him with the opportunity to ask any questions and actively involve him in his own care, which can lead to better compliance and outcomes.

Correct Answer: B

Rationale: The clinical presentation described in the question is consistent with Candida vaginitis, also known as vaginal yeast infection. Candida vaginitis typically presents with a thick, white, curdy discharge that can be visualized on examination. The low pH of 1 is characteristic of Candida infection. The negative KOH whiff test and absence of an unusual smell help differentiate Candida vaginitis from other types of vaginitis.

Correct Answer: B

Rationale: Based on the description provided, the skin lesions are most consistent with seborrheic keratosis. Seborrheic keratoses are common non-cancerous (benign) growths of the skin that often appear as brown, black, or light tan growths with a waxy, stuck-on appearance. They can vary in color and may be round or oval, with a well-defined border. Seborrheic keratoses are typically asymptomatic and can be found on various parts of the body including the face, arms, and legs. The dry, hard scale covering the lesion is typical for seborrheic keratoses.

Correct Answer: C

Rationale: Fibromyalgia is a chronic pain syndrome characterized by widespread musculoskeletal pain, fatigue, and multiple tender points on palpation, especially in the neck, shoulders, back, and hips. The patient's symptoms of widespread pain and tenderness at specific points on the muscles without arthritis, joint swelling, or limitation in range of motion are consistent with fibromyalgia. Fibromyalgia is often associated with poor sleep quality, morning stiffness, and fatigue, which the patient in the case provided experiences. Other conditions like rheumatoid arthritis, osteoarthritis, or polymyalgia rheumatica would typically present differently with specific joint involvement, swelling, and additional systemic symptoms, which are not seen in this patient.

Correct Answer: A

Rationale: It is crucial to keep the patient's torso at a 45-degree angle when measuring the jugular venous pressure (JVP). This position allows the internal jugular vein to partially collapse, ensuring accurate observation of the pulsations. Keeping the patient at a 45-degree angle provides a standardized position for JVP measurement and helps avoid errors in assessment.

Correct Answer: D

Rationale: The patient in this scenario presents with symptoms suggestive of an anorectal disorder. The presence of an irregular, firm mass on the posterior side of the rectum, along with frank blood seen on the glove after a digital rectal examination, raises suspicion for an underlying anorectal cancer. Anorectal cancer can present with symptoms such as rectal bleeding, changes in bowel habits, palpable masses, and weight loss. In this case, the findings of an irregular mass and rectal bleeding are concerning for a malignant process such as anorectal cancer. Further evaluation with imaging studies and biopsy would be warranted for confirmation and to guide appropriate management.

Correct Answer: A

Rationale: Inspiratory splitting of S occurs due to the normal physiological delay in the closure of the aortic and pulmonic valves during inspiration. During inspiration, the negative intrathoracic pressure leads to increased venous return to the right side of the heart, causing a slight delay in the closure of the pulmonic valve. This results in the aortic valve closing first, followed by the closure of the pulmonic valve, leading to the splitting of S during inspiration.