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A patient is concerned about a dark skin lesion on her anterolateral abdomen. It has not changed, and there is no discharge or bleeding. On examination there is a medium brown circular lesion on the anterolateral wall of the abdomen. It is soft, has regular borders, is evenly pigmented, and is about 7 mm in diameter. What is this lesion?
- A. Melanoma
- B. Dysplastic nevus
- C. Supernumerary nipple
- D. Dermatofibroma
Correct Answer: D
Rationale: Given the description provided, the lesion appears to be a dermatofibroma. Dermatofibromas are common benign skin lesions that typically present as a firm, solitary nodule on the skin. They commonly occur on the lower extremities but can also be found on the trunk. The characteristics of a dermatofibroma include being firm to the touch, having regular borders, being evenly pigmented, and a diameter typically less than 1 cm to 2 cm. They are usually painless and do not change significantly over time.
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Mr. Jackson is a 50-year-old African-American who has had discomfort between his scrotum and anus. He also has had some fevers and dysuria. Your rectal examination is halted by tenderness anteriorly, but no frank mass is palpable. What is your most likely diagnosis?
- A. Prostate cancer
- B. Colon cancer
- C. Prostatitis
- D. Colonic polyp
Correct Answer: C
Rationale: The most likely diagnosis in this case is prostatitis. Prostatitis is the inflammation or infection of the prostate gland, which can cause symptoms such as discomfort between the scrotum and anus (perineum), fevers, and dysuria (painful urination). The tenderness anteriorly during rectal examination is consistent with prostatitis as the prostate gland is located in front of the rectum and can be tender to touch when inflamed. Prostate cancer typically presents with symptoms such as urinary frequency, nocturia, hematuria, or bone pain, and is less likely to cause the symptoms described in this scenario. Colon cancer and colonic polyps are less likely as they would not typically cause discomfort in the perineal area or dysuria.
It started a few hours ago, and she has noted nausea with sensitivity to light; she has had headaches like this in the past, usually less than one per week, but not as severe. She does not know of any inciting factors. There has been no change in the frequency of her headaches. She usually takes an over- the-counter analgesic, and this results in resolution of the headache. Based on this description, what is the most likely diagnosis of the type of headache?
- A. Tension
- B. Migraine
- C. Cluster
- D. Analgesic rebound
Correct Answer: B
Rationale: The description of the headache as starting a few hours ago, associated with nausea, sensitivity to light, and being severe in intensity suggests a migraine headache. Migraine headaches are often accompanied by these symptoms, known as migraine features. The fact that the patient experiences headaches like this less than once a week and typically uses over-the-counter analgesics to relieve them is also suggestive of migraines. Tension headaches typically present as a more mild to moderate, band-like pressure around the head, without the associated symptoms of nausea and sensitivity to light. Cluster headaches are characterized by excruciating pain around one eye, often accompanied by other symptoms like redness or tearing in the eye. Analgesic rebound headaches occur due to overuse of pain medications and typically present as daily headaches that improve with the same medication that caused them in the first place.
A 42-year-old florist comes to your office, complaining of chronic constipation for the last 6 months. She has had no nausea, vomiting, or diarrhea and no abdominal pain or cramping. She denies any recent illnesses or injuries. She denies any changes to her diet or exercise program. She is on no new medications. During the review of systems you note that she has felt fatigued, had some weight gain, has irregular periods, and has cold intolerance. Her past medical history is significant for one vaginal delivery and two cesarean sections. She is married, has three children, and owns a flower shop. She denies tobacco, alcohol, or drug use. Her mother has type 2 diabetes and her father has coronary artery disease. There is no family history of cancers. On examination she appears her stated age. Her vital signs are normal. Her head, eyes, ears, nose, throat, and neck examinations are normal. Her cardiac, lung, and abdominal examinations are also unremarkable. Her rectal occult blood test is negative. Her deep tendon reflexes are delayed in response to a blow with the hammer, especially the Achilles tendons. What is the best choice for the cause of her constipation?
- A. Large bowel obstruction
- B. Irritable bowel syndrome
- C. Rectal cancer
- D. Hypothyroidism
Correct Answer: D
Rationale: The constellation of symptoms described in the scenario, including chronic constipation, fatigue, weight gain, irregular periods, cold intolerance, and delayed deep tendon reflexes, suggests hypothyroidism as the likely cause. Hypothyroidism is a condition where the thyroid gland does not produce enough thyroid hormones, leading to a slowdown in bodily functions. Constipation is a common symptom of hypothyroidism due to the decreased motility of the bowel. The presence of cold intolerance, weight gain, and irregular periods further supports this diagnosis, as these are classic symptoms of hypothyroidism. The delayed deep tendon reflexes, especially in the Achilles tendons, are indicative of the myopathic changes that can occur in hypothyroidism. It is important to further investigate thyroid function through laboratory testing to confirm the diagnosis and initiate appropriate treatment. Other conditions such as large bowel obstruction, irritable bowel syndrome, and rectal cancer are less likely based
His abdominal examination is normal. Visualization of the anus shows no masses, inflammation, or fissures. Digital rectal examination reveals a warm, boggy, tender prostate. No discrete masses are felt and there is no blood on the glove. The scrotum and penis appear normal. Urinalysis shows moderate amounts of white blood cells and bacteria. What disorder of the anus, prostate, or rectum best describes this situation?
- A. Benign prostatic hyperplasia (BPH)
- B. Prostatitis
- C. Prostate cancer
- D. Epididymitis
Correct Answer: B
Rationale: Prostatitis is the most likely disorder based on the symptoms described. The warm, boggy, tender prostate upon digital rectal examination, along with the presence of moderate white blood cells and bacteria in the urinalysis, suggests an inflammatory condition of the prostate. In this case, there are no signs of masses or blood in the rectal examination, which would be more indicative of prostate cancer. Epididymitis typically presents with symptoms involving the scrotum and may be associated with testicular pain and swelling, which are not described in this scenario. Benign prostatic hyperplasia (BPH) is a nonmalignant enlargement of the prostate gland that typically presents with symptoms of urinary urgency, frequency, and nocturia, rather than the inflammatory signs seen in this case.
You ask a patient to draw a clock. He fills in all the numbers on the right half of the circle. What do you suspect?
- A. Hemianopsia
- B. Fatigue
- C. Oppositional defiant disorder
- D. Depression
Correct Answer: A
Rationale: Filling in all the numbers on just one side of the clock when asked to draw a clock suggests a visual field deficit, typically seen in hemianopsia. Hemianopsia is a visual impairment where half of the visual field is lost due to neurological damage or injury, such as a stroke. This causes the individual to have difficulty perceiving or attending to objects in the affected visual field. In this case, the patient's right visual field may be affected, leading to the specific pattern of filling numbers on the right half of the clock. It is essential to further assess and refer the patient for a complete visual field evaluation and neurological examination.