Hematology Practice Questions

Q: A 50-year-old male patient complains of pain in the back and legs. On routine investigations, it is found that he is anemic and his ESR is also raised. Which of the following is the most probable diagnosis for this patient?

Multiple myeloma. **Explanation:** The clinical presentation of bone pain (back and legs) in an elderly patient, combined with anemia and a significantly raised ESR, is a classic triad for **Multiple Myeloma (MM)** [1]. **Why Multiple Myeloma is correct:** Multiple Myeloma is a plasma cell dyscrasia characterized by the neoplastic proliferation of a single clone of plasma cells producing monoclonal (M) protein [1]. * **Bone Pain:** Caused by the activation of osteoclasts (via RANKL), leading to lytic lesions, pathological fractures, and bone resorption [1]. * **Anemia:** Usually normocytic, normochromic, resulting from bone marrow infiltration by plasma cells and cytokine-induced suppression of erythropoiesis. * **Raised ESR:** The high levels of monoclonal paraproteins (M-spike) neutralize the negative charge on RBCs, leading to **Rouleaux formation**, which causes a characteristically "extreme" elevation of ESR (often >100 mm/hr) [1]. **Why other options are incorrect:** * **Sickle cell anemia:** While it causes bone pain (vaso-occlusive crises), the ESR is typically **very low** because sickled cells cannot form Rouleaux. * **Polycythemia:** Characterized by an increased RBC mass; the ESR is typically **low or zero** due to increased blood viscosity and crowding. * **Waldenstrom Macroglobulinemia:** While it involves an M-spike (IgM) and high ESR, it typically presents with hyperviscosity symptoms and lymphadenopathy/splenomegaly rather than lytic bone lesions and bone pain [2]. **High-Yield Clinical Pearls for NEET-PG:** * **CRAB Criteria:** **C**alcium (High), **R**enal insufficiency, **A**nemia, **B**one lesions. * **Diagnosis:** Bone marrow biopsy shows >10% plasma cells; Serum Protein Electrophoresis (SPEP) shows an **M-spike** [1]. * **Urine:** Bence-Jones proteins (light chains) may be present (not detected on standard dipstick) [1]. * **X-ray:** "Punched-out" lytic lesions (Skull X-ray is a classic exam image) [1].

Q: A 25-year-old male presented with high-grade fever and hypotension. His Hb is 5 g/dL and TLC is 9000/mm³. What should be included in the management, except?

Oral ciprofloxacin. ### Explanation The patient presents with **Febrile Neutropenia** (implied by high-grade fever and potential bone marrow suppression suggested by severe anemia) and **Septic Shock** (hypotension). **1. Why "Oral ciprofloxacin" is the correct answer (The Exception):** In a patient with hypotension (septic shock), oral medications are contraindicated. Hypotension leads to splanchnic vasoconstriction and reduced gastrointestinal perfusion, resulting in unpredictable and inadequate absorption of drugs. Furthermore, patients with hemodynamic instability or high-risk features (MASCC score <21) require **Intravenous (IV)** broad-spectrum antibiotics immediately to achieve rapid therapeutic levels. **2. Analysis of Incorrect Options:** * **Packed cell transfusion:** The patient has severe anemia (Hb 5 g/dL). In the presence of hemodynamic instability (hypotension), a blood transfusion is indicated to improve oxygen-carrying capacity and stabilize the patient. * **IV ciprofloxacin:** Fluoroquinolones are often part of the regimen for febrile neutropenia, especially when targeting Gram-negative organisms. In a state of shock, the **IV route** is the mandatory standard of care. * **Colony stimulating factor (G-CSF):** While not always first-line for all fevers, G-CSF is indicated in "high-risk" febrile neutropenia (e.g., sepsis, hypotension, or multi-organ failure) to accelerate neutrophil recovery and improve clinical outcomes. **Clinical Pearls for NEET-PG:** * **Definition of Febrile Neutropenia:** Single oral temp >38.3°C (101°F) or >38.0°C (100.4°F) for 1 hour + ANC <500 cells/mm³. * **Initial Choice:** Monotherapy with an anti-pseudomonal beta-lactam (e.g., Piperacillin-Tazobactam, Cefepime, or Meropenem) is standard. * **Route Rule:** Always choose **IV over Oral** if the patient is hypotensive, vomiting, or has severe mucositis.

Q: Which of the following is NOT typically seen in a chronic case of sickle cell anemia?

Splenomegaly. **Explanation:** The correct answer is **Splenomegaly**. In chronic cases of Sickle Cell Anemia (SCA), the spleen undergoes a process known as **autosplenectomy**. While children with SCA may initially present with splenomegaly due to sequestration of sickled cells, recurrent splenic infarcts over time lead to progressive fibrosis and shrinkage of the organ. By adulthood, the spleen is typically small, calcified, and non-functional. **Analysis of Incorrect Options:** * **Hepatomegaly:** This is a common finding in chronic SCA. It occurs due to compensatory extramedullary hematopoiesis, chronic passive congestion from heart failure, or iron overload (hemosiderosis) resulting from frequent blood transfusions. * **Pulmonary Hypertension:** This is a major chronic complication and a leading cause of death in adult SCA patients. It results from chronic hemolysis, which depletes nitric oxide, leading to vasoconstriction and vascular remodeling. * **Cardiomegaly:** Chronic anemia leads to a hyperdynamic circulation. To compensate for the low oxygen-carrying capacity, the stroke volume and heart rate increase, eventually resulting in eccentric left ventricular hypertrophy and cardiomegaly. **NEET-PG High-Yield Pearls:** * **Autosplenectomy** usually occurs by age 6–8 years in HbSS patients. * The presence of **Howell-Jolly bodies** on a peripheral smear is a hallmark of functional asplenia. * Patients with autosplenectomy are at high risk for infections by **encapsulated organisms** (*S. pneumoniae, H. influenzae, N. meningitidis*). * If an adult with sickle cell disease has splenomegaly, consider **Sickle Cell-Thalassemia (HbSβ+)** or **HbSC disease**, where sickling is less severe and the spleen is preserved longer.

Q: What is the most sensitive indicator for iron deficiency anemia?

Serum ferritin. **Explanation:** Iron deficiency anemia (IDA) develops in stages: first, iron stores are depleted, followed by a decrease in transport iron, and finally, a drop in hemoglobin. **1. Why Serum Ferritin is the Correct Answer:** Serum ferritin is the **most sensitive and specific initial laboratory indicator** for iron deficiency. It directly reflects the body's total iron stores. A low serum ferritin level (<15–30 ng/mL) is virtually diagnostic of iron deficiency, as it is the first parameter to decrease before clinical anemia or changes in red cell morphology (microcytosis/hypochromia) occur. **2. Why Other Options are Incorrect:** * **TIBC (Total Iron-Binding Capacity):** While TIBC increases in IDA, it is less specific than ferritin and can be affected by nutritional status and liver function. * **Percentage Saturation of Transferrin:** This measures transport iron. It decreases in IDA but also fluctuates in other conditions like anemia of chronic disease (ACD) and is less sensitive for early storage depletion. * **Bone Marrow Iron:** While the **"Gold Standard"** for diagnosing iron deficiency (Prussian blue staining), it is an invasive procedure. In the context of "most sensitive indicator" in routine clinical practice, serum ferritin is the preferred non-invasive test. **High-Yield Clinical Pearls for NEET-PG:** * **The "Rule of Ferritin":** Ferritin is an **acute-phase reactant**. In the presence of inflammation, infection, or malignancy, ferritin levels may be falsely normal or elevated even if iron deficiency exists. * **Earliest Sign of IDA:** Depletion of bone marrow iron stores (but Serum Ferritin is the earliest biochemical marker). * **Earliest Sign of Response to Iron Therapy:** Increase in **Reticulocyte count** (usually seen within 5–7 days). * **Soluble Transferrin Receptor (sTfR) Assay:** Useful to differentiate IDA from Anemia of Chronic Disease (sTfR is elevated in IDA but normal in ACD).

Q: A 23-year-old male presented with epistaxis. Lab parameters show Hb= 5 g/dl, Platelet count = 23,000/mm3 and absolute neutrophil count = 176/mm3. Bone marrow is hypocellular with fatty infiltration. Which of the following statements regarding this condition is FALSE?

Lymphadenopathy and splenomegaly are highly typical.. ### Explanation The clinical presentation of pancytopenia (anemia, thrombocytopenia, and neutropenia) combined with a hypocellular bone marrow showing fatty replacement is diagnostic of **Aplastic Anemia**. **Why Option B is the Correct Answer (False Statement):** In Aplastic Anemia, the primary pathology is the failure of the bone marrow to produce cells. It is **not** a proliferative or infiltrative disorder. Therefore, physical findings such as **lymphadenopathy and splenomegaly are characteristically absent**. If these are present, clinicians must suspect alternative diagnoses like leukemia, lymphoma, or myelofibrosis. **Analysis of Other Options:** * **Option A (True):** Allogeneic Hematopoietic Stem Cell Transplantation (HSCT) is the treatment of choice for young patients (usually <40 years) with a matched sibling donor and can be curative. * **Option C (True):** While patients present with symptoms of anemia (fatigue) and infection (fever), **bleeding** due to severe thrombocytopenia (epistaxis, petechiae, mucosal bleeds) is often the most common and distressing presenting symptom. * **Option D (True):** For patients who are older or lack a donor, immunosuppressive therapy (IST) using **Antithymocyte Globulin (ATG)** and **Cyclosporine** is the standard of care, as the disease is often T-cell mediated. ### Clinical Pearls for NEET-PG: * **Severity Criteria (Camitta Criteria):** Severe Aplastic Anemia is defined by marrow cellularity <25% plus at least two of: 1. ANC < 500/mm³ (Very severe if < 200/mm³—as seen in this patient). 2. Platelets < 20,000/mm³. 3. Reticulocyte count < 1% (or < 60,000/mm³). * **Drug of Choice:** Eltrombopag (TPO receptor agonist) is now frequently added to IST to improve response rates. * **Most common cause:** Idiopathic (immune-mediated). Secondary causes include drugs (Chloramphenicol, Sulfa), viruses (Hepatitis, EBV), and toxins (Benzene).

Q: What is the primary drug used in the treatment of Acute Promyelocytic Leukemia?

Arsenic trioxide. Acute Promyelocytic Leukemia (APL), a subtype of AML (M3), is characterized by the chromosomal translocation **t(15;17)**, which results in the **PML-RARα** fusion gene [1]. This fusion protein arrests myeloid differentiation at the promyelocyte stage. **Why Arsenic Trioxide (ATO) is the correct answer:** While both All-trans retinoic acid (ATRA/Tretinoin) and Arsenic Trioxide (ATO) are used, **Arsenic Trioxide** is now considered the primary backbone of therapy, especially in low-to-intermediate risk patients. ATO works by binding directly to the PML moiety of the fusion protein, inducing its degradation and promoting apoptosis of the leukemic cells. When combined with ATRA, it achieves high cure rates without the need for traditional chemotherapy. **Analysis of Incorrect Options:** * **B. Tretinoin (ATRA):** While ATRA is a standard first-line agent that induces differentiation of promyelocytes, modern protocols (like the Lo-Coco regimen) emphasize the ATO-ATRA combination as the primary curative strategy. In many recent clinical guidelines, ATO is highlighted for its potent role in achieving molecular remission. * **C. Gefitinib:** This is a Tyrosine Kinase Inhibitor (TKI) targeting the **EGFR** mutation, primarily used in Non-Small Cell Lung Cancer (NSCLC) [2]. * **D. Dasatinib:** This is a second-generation TKI used for **Chronic Myeloid Leukemia (CML)** and Philadelphia chromosome-positive ALL. **High-Yield Clinical Pearls for NEET-PG:** * **DIC Risk:** APL is a medical emergency due to the high risk of Disseminated Intravascular Coagulation (DIC) triggered by the release of procoagulants from granules. * **Differentiation Syndrome:** A major side effect of ATRA/ATO therapy, characterized by fever, respiratory distress, and pulmonary infiltrates; treated with **Dexamethasone**. * **Monitoring:** ATO can cause **QT prolongation**; baseline and periodic ECGs are mandatory.

Question 1

A 50-year-old male patient complains of pain in the back and legs. On routine investigations, it is found that he is anemic and his ESR is also raised. Which of the following is the most probable diagnosis for this patient?

Accepted Answer

Multiple myeloma

Answer

Sickle cell anemia

Answer

Polycythemia

Answer

Waldenstrom macroglobulinemia

Question 2

A 25-year-old male presented with high-grade fever and hypotension. His Hb is 5 g/dL and TLC is 9000/mm³. What should be included in the management, except?

Accepted Answer

Oral ciprofloxacin

Answer

Packed cell transfusion

Answer

IV ciprofloxacin

Answer

Colony stimulating factor

Question 3

Which of the following is NOT typically seen in a chronic case of sickle cell anemia?

Accepted Answer

Splenomegaly

Answer

Hepatomegaly

Answer

Pulmonary hypertension

Answer

Cardiomegaly

Question 4

What is the most sensitive indicator for iron deficiency anemia?

Accepted Answer

Serum ferritin

Answer

TIBC (Total Iron-Binding Capacity)

Answer

Percentage saturation of transferrin

Answer

Bone marrow iron

Question 5

A patient has received 8 blood transfusions in the last few years, with Hb: 6.0 g/dL and RBCs 2 lakh/cu mm with MCV=64 fL. Which of the following investigations is not required for evaluating this patient?

Accepted Answer

Bone marrow examination

Answer

Tests for pulmonary hemosiderosis

Answer

GI endoscopy

Answer

Urine hemosiderin

Question 6

A 23-year-old male presented with epistaxis. Lab parameters show Hb= 5 g/dl, Platelet count = 23,000/mm3 and absolute neutrophil count = 176/mm3. Bone marrow is hypocellular with fatty infiltration. Which of the following statements regarding this condition is FALSE?

Accepted Answer

Lymphadenopathy and splenomegaly are highly typical.

Answer

Hematopoietic stem cell transplantation can be curative.

Answer

Bleeding is the most common symptom.

Answer

Immunosuppressants are used in treatment.

Question 7

Which of the following is a finding in functional platelet defects?

Accepted Answer

Normal platelet count and prolonged bleeding time

Answer

Normal platelet count and bleeding time

Answer

Prolonged bleeding time, prothrombin time, and PTT

Answer

Thrombocytopenia and prolonged bleeding time

Question 8

High serum uric acid, high serum phosphates, and high serum creatinine in a patient will be observed in which of the following conditions?

Accepted Answer

Chronic lymphocytic leukemia

Answer

Obstructive jaundice

Answer

Status epilepticus

Answer

Typhoid

Question 9

A 21-year-old male presents with anemia and mild hepatosplenomegaly. His hemoglobin is 5 g/dL and he has a history of a single blood transfusion. What is the most probable diagnosis?

Accepted Answer

Autoimmune hemolytic anemia

Answer

Thalassemia major

Answer

Thalassemia minor

Answer

Thalassemia intermedia

Question 10

What is the primary drug used in the treatment of Acute Promyelocytic Leukemia?

Accepted Answer

Arsenic trioxide

Answer

Tretinoin

Answer

Gefitinib

Answer

Dasatinib

Hematology — MCQs

Hematology — MCQs

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