USMLE CLINICAL CONDITIONS IDENTIFICATION ACTUAL EXAM
2025|| 145 QUESTIONS WITH VERIFIED RATIONALES
1. Explain the significance of identifying Pick bodies in the diagnosis of
neurological conditions. What do they indicate about the underlying
pathology?
They indicate a viral infection in the brain.
They are a hallmark of frontotemporal dementia.
They suggest the presence of amyloid plaques.
They are associated with multiple sclerosis.
2. A 15-year-old patient presents with localized bone pain and swelling in the
lower limb. Imaging reveals an onion-skin periosteal reaction. Based on this
finding, what would be the most appropriate next step in management?
Immediate surgical intervention to remove the tumor.
Referral for a biopsy to confirm the diagnosis.
Start chemotherapy without further investigation.
Monitor the patient with regular follow-ups.
3. A patient presents with shoulder pain, Horner's syndrome, and weight loss.
Based on these symptoms, which diagnostic approach would be most
appropriate to confirm the presence of a Pancoast tumor?
Chest X-ray followed by a CT scan
MRI of the brain
Ultrasound of the abdomen
Blood tests for tumor markers
4. A patient presents with symptoms of fatigue, sore throat, and swollen
lymph nodes. A laboratory test shows the presence of IgM heterophile
, antibodies. Based on this information, what would be the most appropriate
next step in management?
Initiate antiviral therapy immediately.
Perform a liver function test.
Conduct a complete blood count to check for atypical
lymphocytes.
Refer the patient for a biopsy.
Advise the patient to rest and monitor symptoms.
5. Explain the significance of the red, itchy, swollen rash of the nipple/areola
in the context of Paget's disease of the breast.
It indicates a benign condition
It is a common symptom of all breast diseases
It serves as a key diagnostic feature for Paget's disease
It is unrelated to breast cancer
6. Explain how rouleaux formation can be utilized in the diagnosis of multiple
myeloma. What does it indicate about the patient's condition?
It suggests the presence of a viral infection.
It indicates increased plasma proteins affecting blood viscosity.
It reflects a decrease in red blood cell production.
It shows an increase in platelet aggregation.
7. Explain how Vitamin C deficiency affects collagen synthesis and the
resulting clinical features observed in Scurvy.
It prevents the absorption of calcium, leading to weak bones.
It inhibits the hydroxylation of proline and lysine, impairing
collagen formation.
, It reduces the production of red blood cells, causing anemia.
It disrupts the metabolism of carbohydrates, leading to fatigue.
8. Explain the significance of hypersegmented neutrophils in diagnosing
megaloblastic anemia. What does their presence indicate about the
underlying condition?
They indicate a bacterial infection.
They suggest a deficiency in vitamin B12 or folate.
They are a sign of chronic inflammation.
They reflect normal bone marrow function.
9. A patient presents with fatigue, pallor, and a history of gastrointestinal
bleeding. Laboratory tests reveal microcytic anemia. Considering the
potential causes, which diagnostic test would be most appropriate to
confirm a hookworm infection?
Complete blood count
Stool examination for ova and parasites
Bone marrow biopsy
Serum ferritin level
10. Explain the significance of Trousseau's sign in the context of
hypercoagulability and its association with certain cancers.
It indicates a deficiency in vitamin K.
It is a sign of deep vein thrombosis.
It suggests the presence of a malignancy, particularly
adenocarcinoma.
It reflects an autoimmune disorder.
11. Depletion of the pigmented dopaminergic neurons in the substantia nigra
is seen in which of the following?
, A. Alzheimer's Disease
B. Parkinson's Disease
C. Amyotrophic Lateral Sclerosis
D. B & C
12. A patient presents with symptoms of fatigue, joint pain, and a rash after
starting a new medication for hypertension. Which of the following steps
should be taken to evaluate the possibility of drug-induced systemic lupus
erythematosus (SLE)?
Perform a complete blood count to check for anemia.
Order a test for antihistone antibodies and review the patient's
medication history.
Conduct a liver function test to assess for drug toxicity.
Initiate treatment with corticosteroids immediately.
13. Explain the significance of congenital unconjugated hyperbilirubinemia in
the diagnosis of Crigler-Najjar syndrome.
It indicates liver failure.
It suggests a genetic defect in bilirubin metabolism.
It is a common symptom of all neonatal jaundice.
It shows the presence of infection.
14. The presence of an increased number of hypersegmented neutrophils in
the peripheral blood, as shown in this image, is an indication of which of
the following conditions?
2025|| 145 QUESTIONS WITH VERIFIED RATIONALES
1. Explain the significance of identifying Pick bodies in the diagnosis of
neurological conditions. What do they indicate about the underlying
pathology?
They indicate a viral infection in the brain.
They are a hallmark of frontotemporal dementia.
They suggest the presence of amyloid plaques.
They are associated with multiple sclerosis.
2. A 15-year-old patient presents with localized bone pain and swelling in the
lower limb. Imaging reveals an onion-skin periosteal reaction. Based on this
finding, what would be the most appropriate next step in management?
Immediate surgical intervention to remove the tumor.
Referral for a biopsy to confirm the diagnosis.
Start chemotherapy without further investigation.
Monitor the patient with regular follow-ups.
3. A patient presents with shoulder pain, Horner's syndrome, and weight loss.
Based on these symptoms, which diagnostic approach would be most
appropriate to confirm the presence of a Pancoast tumor?
Chest X-ray followed by a CT scan
MRI of the brain
Ultrasound of the abdomen
Blood tests for tumor markers
4. A patient presents with symptoms of fatigue, sore throat, and swollen
lymph nodes. A laboratory test shows the presence of IgM heterophile
, antibodies. Based on this information, what would be the most appropriate
next step in management?
Initiate antiviral therapy immediately.
Perform a liver function test.
Conduct a complete blood count to check for atypical
lymphocytes.
Refer the patient for a biopsy.
Advise the patient to rest and monitor symptoms.
5. Explain the significance of the red, itchy, swollen rash of the nipple/areola
in the context of Paget's disease of the breast.
It indicates a benign condition
It is a common symptom of all breast diseases
It serves as a key diagnostic feature for Paget's disease
It is unrelated to breast cancer
6. Explain how rouleaux formation can be utilized in the diagnosis of multiple
myeloma. What does it indicate about the patient's condition?
It suggests the presence of a viral infection.
It indicates increased plasma proteins affecting blood viscosity.
It reflects a decrease in red blood cell production.
It shows an increase in platelet aggregation.
7. Explain how Vitamin C deficiency affects collagen synthesis and the
resulting clinical features observed in Scurvy.
It prevents the absorption of calcium, leading to weak bones.
It inhibits the hydroxylation of proline and lysine, impairing
collagen formation.
, It reduces the production of red blood cells, causing anemia.
It disrupts the metabolism of carbohydrates, leading to fatigue.
8. Explain the significance of hypersegmented neutrophils in diagnosing
megaloblastic anemia. What does their presence indicate about the
underlying condition?
They indicate a bacterial infection.
They suggest a deficiency in vitamin B12 or folate.
They are a sign of chronic inflammation.
They reflect normal bone marrow function.
9. A patient presents with fatigue, pallor, and a history of gastrointestinal
bleeding. Laboratory tests reveal microcytic anemia. Considering the
potential causes, which diagnostic test would be most appropriate to
confirm a hookworm infection?
Complete blood count
Stool examination for ova and parasites
Bone marrow biopsy
Serum ferritin level
10. Explain the significance of Trousseau's sign in the context of
hypercoagulability and its association with certain cancers.
It indicates a deficiency in vitamin K.
It is a sign of deep vein thrombosis.
It suggests the presence of a malignancy, particularly
adenocarcinoma.
It reflects an autoimmune disorder.
11. Depletion of the pigmented dopaminergic neurons in the substantia nigra
is seen in which of the following?
, A. Alzheimer's Disease
B. Parkinson's Disease
C. Amyotrophic Lateral Sclerosis
D. B & C
12. A patient presents with symptoms of fatigue, joint pain, and a rash after
starting a new medication for hypertension. Which of the following steps
should be taken to evaluate the possibility of drug-induced systemic lupus
erythematosus (SLE)?
Perform a complete blood count to check for anemia.
Order a test for antihistone antibodies and review the patient's
medication history.
Conduct a liver function test to assess for drug toxicity.
Initiate treatment with corticosteroids immediately.
13. Explain the significance of congenital unconjugated hyperbilirubinemia in
the diagnosis of Crigler-Najjar syndrome.
It indicates liver failure.
It suggests a genetic defect in bilirubin metabolism.
It is a common symptom of all neonatal jaundice.
It shows the presence of infection.
14. The presence of an increased number of hypersegmented neutrophils in
the peripheral blood, as shown in this image, is an indication of which of
the following conditions?
