A 76-year-old retired farmer comes to your office complaining of abdominal pain, constipation, and a low-grade fever for about 3 days. He denies any nausea, vomiting, or diarrhea. The only unusual thing he remembers eating is two bags of popcorn at the movies with his grandson, 3 days before his symptoms began. He denies any other recent illnesses. His past medical history is significant for coronary artery disease and high blood pressure. He has been married for over 50 years. He denies any tobacco, alcohol, or drug use. His mother died of colon cancer and his father had a stroke. On examination he appears his stated age and is in no acute distress. His temperature is 9 degrees and his other vital signs are unremarkable. His head, cardiac, and pulmonary examinations are normal. He has normal bowel sounds and is tender over the left lower quadrant. He has no rebound or guarding. His rectal examination is unremarkable and his fecal occult blood test is negative. His prostate is slightly enlarged but his testicular, penile, and inguinal examinations are all normal. Blood work is pending. What diagnosis for abdominal pain best describes his symptoms and signs?

Correct Answer: A

Rationale: The most likely diagnosis for this patient's symptoms and signs is acute diverticulitis. His presentation of abdominal pain, constipation, and low-grade fever, along with tenderness over the left lower quadrant, is consistent with diverticulitis, which is inflammation or infection of small pouches (diverticula) that can develop in the colon. The history of recent onset of symptoms after consuming popcorn, typically a high-fiber food that can exacerbate diverticulitis, further supports this diagnosis. The negative fecal occult blood test makes more acute intra-abdominal processes like acute appendicitis less likely. Acute cholecystitis would present with right upper quadrant pain, and mesenteric ischemia typically presents with severe abdominal pain, nausea, and vomiting, as well as signs of abdominal distress.

Correct Answer: A

Rationale: Otosclerosis is a condition characterized by abnormal bone growth in the middle ear, specifically around the stapes bone. In cases of otosclerosis, the bone conduction is greater than air conduction on the affected side, which is seen in the scenario described. The Weber test localizes to the affected ear, meaning the patient hears the sound of the tuning fork better in the left ear in this case. This is because the abnormal bone growth can restrict the movement of the ossicles, leading to a conductive hearing loss. Otosclerosis typically affects one ear, and its presentation aligns with the results of the hearing tests performed in this case.

Correct Answer: C

Rationale: The pectoral lymph node group, also known as the Level III lymph nodes, is the most commonly involved in breast cancer metastasis. These lymph nodes are located along the lower border of the pectoralis minor muscle and are an important regional drainage site for breast tissue. Therefore, in cases of breast cancer, the pectoral lymph nodes are frequently affected due to their proximity to the breast tissue.

Correct Answer: A

Rationale: The most likely diagnosis for this patient's symptoms and signs is acute diverticulitis. His presentation of abdominal pain, constipation, and low-grade fever, along with tenderness over the left lower quadrant, is consistent with diverticulitis, which is inflammation or infection of small pouches (diverticula) that can develop in the colon. The history of recent onset of symptoms after consuming popcorn, typically a high-fiber food that can exacerbate diverticulitis, further supports this diagnosis. The negative fecal occult blood test makes more acute intra-abdominal processes like acute appendicitis less likely. Acute cholecystitis would present with right upper quadrant pain, and mesenteric ischemia typically presents with severe abdominal pain, nausea, and vomiting, as well as signs of abdominal distress.

Correct Answer: C

Rationale: To determine whether a murmur is systolic or diastolic, you should judge the relative length of systole and diastole by auscultation. Systolic murmurs occur during systole, which is the phase of the cardiac cycle when the heart is contracting and pushing blood out of the chambers. Diastolic murmurs occur during diastole, which is the phase when the heart is relaxing and filling with blood. By carefully listening to the timing of the murmur in relation to the cardiac cycle, you can determine if it is systolic or diastolic. Palpating the carotid pulse (Choice A) or radial pulse (Choice B) can help assess the pulse characteristics, but it does not directly determine whether a murmur is systolic or diastolic. Correlating the murmur with a bedside heart monitor (Choice D) may provide additional information about heart rate or rhythm, but it does not specifically indicate

Correct Answer: C

Rationale: Splitting of the second heart sound is when the aortic and pulmonic valves close at slightly different times, resulting in two distinct components to the sound. This split is best heard over the apex of the heart, typically with the diaphragm of the stethoscope. The aortic component is heard first and represents closure of the aortic valve, followed by the pulmonic component, representing closure of the pulmonic valve. The split can narrow during inspiration and widen during expiration, which is important to keep in mind during assessment.

Correct Answer: A

Rationale: Mr. Patel's case involves an enlarged liver, which warrants further investigation to determine the underlying cause. An ultrasound of the liver would provide valuable information regarding the size, shape, and texture of the liver, helping to identify any potential abnormalities such as liver cirrhosis, fatty liver disease, or liver tumors. This imaging study can also help differentiate between different conditions that may be causing the liver enlargement, guiding subsequent diagnostic and treatment decisions. Therefore, obtaining an ultrasound of the liver is the most appropriate next step in evaluating Mr. Patel's condition.

Correct Answer: C

Rationale: Diplopia occurring when one eye is covered is a condition known as monocular diplopia. This symptom is typically not caused by problems within the eye itself, such as irregularities in the cornea or lens. Instead, monocular diplopia with one eye covered is more likely to be an indication of a neurological issue, often involving the brainstem. Lesions or damage in the brainstem can disrupt the normal coordination of eye movements, leading to the perception of double vision when one eye is closed. Weakness of CN III (oculomotor nerve) or CN IV (trochlear nerve) may cause diplopia when both eyes are open, but it would not typically manifest as monocular diplopia.

Correct Answer: D

Rationale: It is crucial to assess Adam's suicide risk immediately due to the statements he made about it being better if he were not here. This indicates possible suicidal ideation, which requires urgent attention and intervention. Asking directly about suicidal thoughts and intentions can help determine the level of risk and ensure that appropriate support and resources are provided to Adam. It is important to take any mention of suicide seriously and prioritize the safety and well-being of the individual in such situations.