Hematopathology Practice Questions

Q: Flow cytometry is primarily used for analysis of which of the following cell types?

Lymphocytes. ***Lymphocytes*** - Flow cytometry is excellently suited for **lymphocyte analysis** due to their distinct surface markers (CD antigens) that can be labeled with fluorescent antibodies. - It allows for the **identification and quantification of various lymphocyte subsets** (e.g., T cells, B cells, NK cells), crucial in diagnosing immunodeficiencies, autoimmune diseases, and hematologic malignancies. *Erythrocytes* - While flow cytometry can detect erythrocytes, their primary role is oxygen transport, and they **lack cell surface markers** commonly analyzed by flow cytometry for classification. - **Complete blood count (CBC)** is the standard method for erythrocyte quantification and morphological analysis. *Platelets* - Flow cytometry can be used to study platelet activation and surface markers, but it's not their **primary or routine analytical tool** for mere count or general assessment. - **Automated hematology analyzers** are routinely used for platelet counts and basic morphology. *Basophil* - Basophils are a type of granulocyte and can be identified by flow cytometry, but they are a **very small percentage of circulating leukocytes**, making them less commonly the *primary* target of a typical flow cytometry panel focused on overall leukocyte populations. - While they can be analyzed, lymphocytes offer a much **broader range of clinical utility** due to their diverse subpopulations and roles in immunity and disease.

Q: Where are Dutcher bodies typically seen?

Bone marrow. ***Bone marrow*** - **Dutcher bodies** are **intranuclear inclusions** of immunoglobulin, characteristically seen in **plasma cells** within the bone marrow. - Their presence is a classic morphological feature of **Waldenström macroglobulinemia** and other lymphoproliferative disorders. *Brain* - The brain is not the typical site for finding Dutcher bodies; structures like **Lewy bodies** (Parkinson's disease) or **neurofibrillary tangles** (Alzheimer's disease) are seen here. - Dutcher bodies are specifically associated with plasma cell abnormalities and **B-cell lymphomas**. *Spleen* - While the spleen can be involved in various hematological malignancies, Dutcher bodies are not primarily identified within splenic tissue but rather in the **plasma cells** of the **bone marrow**. - Splenic pathology typically involves changes in spleen size and cellular architecture, not intranuclear inclusions like Dutcher bodies. *Liver* - The liver is not the primary site for the detection of Dutcher bodies. Liver pathology might show infiltration by malignant cells in some systemic diseases, but not these specific inclusions within hepatocytes or other liver cells. - **Councilman bodies** (apoptotic hepatocytes in viral hepatitis) are an example of liver-specific microscopic findings.

Q: Which factor is primarily found in cryoprecipitate?

Factor VIII. ***Factor VIII*** - Cryoprecipitate is enriched with **Factor VIII**, essential for blood coagulation and hemophilia treatment [1]. - It also contains **fibrinogen**, **Factor XIII**, and von Willebrand factor, crucial for stable clot formation [1]. *Factor II* - Factor II, also known as **prothrombin**, is mainly found in **plasma**, not concentrated in cryoprecipitate. - It is not specifically extracted through cryoprecipitation, which focuses on fibrinogen and other factors. *Factor V* - Factor V is generally present in **plasma**, but not in significant amounts in cryoprecipitate. - It plays a role in the coagulation cascade but is not a primary component of cryoprecipitate. *Factor IX* - Factor IX is mainly associated with the **intrinsic pathway** of coagulation and is part of plasma, not concentrated in cryoprecipitate. - While it is vital for hemophilia B, it does not form part of the cryoprecipitate's key components. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 669-670.

Q: Heinz bodies are removed by?

Macrophages. ***Macrophages*** - Macrophages, particularly those in the **spleen**, are responsible for pitting out Heinz bodies from red blood cells. - This process is part of the **extravascular hemolysis** that occurs when red blood cells containing Heinz bodies are prematurely destroyed. *Lymphocytes* - Lymphocytes are primary cells of the **adaptive immune system**, involved in recognizing and targeting specific pathogens or abnormal cells. - They do not play a role in the removal of intracellular inclusions like Heinz bodies from red blood cells. *Neutrophils* - Neutrophils are a type of **phagocyte** and a crucial component of the **innate immune system**, primarily involved in fighting bacterial and fungal infections. - Their function is mainly in acute inflammation and phagocytosing microbes, not in the removal of inclusions from red blood cells. *Fibroblasts* - Fibroblasts are responsible for producing the **extracellular matrix** and **collagen**, playing a critical role in wound healing and tissue repair. - They are not immune cells and are not involved in the removal of cellular debris or inclusions like Heinz bodies.

Q: Which of the following statements about thrombotic thrombocytopenic purpura is false?

Grossly abnormal coagulation tests. ***Grossly abnormal coagulation tests*** - In thrombotic thrombocytopenic purpura (TTP), coagulation tests typically remain **normal**, which is a distinguishing factor from other conditions like disseminated intravascular coagulation (DIC) [1]. - The primary pathology in TTP is due to a deficiency in **ADAMTS13**, leading to the formation of large von Willebrand factor multimers without significant **coagulation abnormalities** [2]. *Normal complement level* - TTP is not associated with **complement system abnormalities**; often, complement levels are normal, unlike conditions such as **atypical hemolytic uremic syndrome**. - Increased activation or consumption of complement is not a typical feature in TTP, making this statement false. *Micro angiopathic hemolytic anemia* - Microangiopathic hemolytic anemia is a hallmark of TTP, resulting from the **shearing of erythrocytes** in the small vasculature due to thrombi formation [1,2]. - The presence of **schistocytes** on a peripheral blood smear is commonly observed in this condition, indicating this statement is true. *Thrombocytopenia* - TTP is characterized by severe **thrombocytopenia** resulting from the consumption of platelets during the formation of microthrombi [1,2]. - This condition often leads to **purpura** and increased bleeding tendencies due to low platelet counts, confirming this option is true. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 667-668. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Kidney, pp. 947-948.

Q: In which condition is the 'Swiss cheese pattern' typically observed in pathology?

Endometrial hyperplasia. ***Metropathica hemorrhagica*** - Characterized by a **Swiss cheese pattern** due to multiple cystic changes in the endometrium [1], often associated with chronic endometrial irritation. - The pattern arises from **irregular endometrial proliferation** and is indicative of disturbances in menstrual function. *Mucinous cystadenoma* - Typically presents as a **smooth, multilocular cyst** with mucin production, but does not exhibit a Swiss cheese morphology. - Often associated with **abdominal masses** rather than the specific endometrial patterns seen in metropathica hemorrhagica. *Dermoid* - Consists of **teratoma-like tissues** and may show cystic areas, but lacks the Swiss cheese appearance associated with endometrial pathology. - Commonly found in **ovarian masses**, characterized by a variety of tissue types instead of the specific cystic changes related to metropathica hemorrhagica. *Serous cystadenoma* - Features a **serous fluid-filled cyst**, often uniform in appearance, without the Swiss cheese pattern. - Primarily occurs in the ovaries and is noted for its **smooth surface** rather than the cystic irregularities typical of metropathica hemorrhagica. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Female Genital Tract Disease, pp. 473-475.

Q: Which of the following is a feature not typically associated with Hereditary Spherocytosis?

Direct Coombs Positive. ***Direct Coomb's Positive*** - In Hereditary Spherocytosis, the **Coomb's test** is typically **negative**, indicating that hemolysis is not due to autoimmune factors. - Presence of **spherocytes** on the blood smear and increased fragility are hallmark findings, not antibodies against red cells [1]. *Splenomegaly* - **Splenomegaly** is common in Hereditary Spherocytosis as the spleen actively removes abnormal spherocytes from circulation [1]. - It can lead to **hypersplenism**, with resultant anemia and thrombocytopenia. *Increased Osmotic Fragility* - Increased osmotic fragility is a key feature of Hereditary Spherocytosis, as red blood cells are less able to withstand hypotonic solutions [1]. - This results from a defect in the red cell membrane, causing spherocyte shape and fragility. *Gall stones* - Patients may develop **gallstones** due to increased bilirubin from the breakdown of spherocytes, leading to **bilirubin stones** [1]. - Gallstones are a common complication due to chronic hemolysis. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Blood And Bone Marrow Disease, pp. 597-598.

Q: Which of the following is a quantitative defect in globin synthesis?

Thalassemia. ***Thalassemia*** - **Thalassemia** is characterized by a **quantitative defect** in globin chain synthesis, leading to reduced hemoglobin production [1][2][5]. - It results in **microcytic anemia** due to ineffective erythropoiesis and imbalanced globin chain production [2]. *Diamond-Blackfan syndrome* - This condition is a type of **macrocytic anemia** due to failure of red blood cell production, rather than a globin synthesis defect. - It generally presents with **normocytic or macrocytic** anemia and is associated with **erythroblastopenia**. *Sickle cell hemoglobinopathy* - Sickle cell disease involves a **qualitative defect** in hemoglobin (Hb S) rather than a quantitative one [3][4][5]. - Symptoms include pain episodes, **vaso-occlusive crises**, and organ damage due to sickling of red blood cells [3][4]. *G6PD deficiency* - G6PD deficiency is an **enzyme deficiency** leading to hemolytic anemia under oxidative stress, not a defect in globin synthesis [4][5]. - Characterized by **episodic hemolytic anemia**, it primarily affects red blood cell stability rather than hemoglobin production [4]. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Blood And Bone Marrow Disease, pp. 587-588. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 646-647. [3] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Blood And Bone Marrow Disease, pp. 598-599. [4] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 652-654. [5] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, p. 638.

Q: What is the most important diagnostic feature for beta thalassemia trait?

Increased HbA2. ***Raised HbA2*** - In beta thalassemia trait, the most significant diagnostic feature is an **increased level of HbA2** (>3.5%), which helps differentiate it from other types of anemias [1]. - This is due to a compensatory mechanism as the body attempts to produce more **alpha globin chains** in response to decreased beta globin production. *Reduced MCV* - While **reduced mean corpuscular volume (MCV)** can indicate microcytic anemia, it is not specific enough for beta thalassemia trait as it can appear in other conditions. - MCV can vary in individuals, making it less reliable as a **diagnostic feature** compared to HbA2 levels. *Raised HbF* - An increase in **hemoglobin F (HbF)** is more characteristic of beta thalassemia major rather than the trait; levels in the trait do not typically rise significantly. - This feature can also be elevated in other conditions, thus not serving as a definitive marker for the trait. *Reduced MCH* - A **decreased mean corpuscular hemoglobin (MCH)** is indicative of microcytic anemia but lacks specificity for beta thalassemia trait alone. - Similar to MCV, it can occur in various types of anemia and does not pinpoint the diagnosis effectively. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 649-650.

Q: Which type(s) of hemophilia is/are X-linked?

Both A & B. ***Both A & B*** - Both **Hemophilia A** and **Hemophilia B** are **X-linked recessive** disorders [1][2] caused by deficiency of specific clotting factors (Factor VIII for A and Factor IX for B). - They are inherited through **carrier females**, affecting predominantly males, showcasing their X-linked transmission [1]. *Hemophilia A* - It is indeed an **X-linked recessive** disorder [2] but does not encompass all types of hemophilia. - It results from a deficiency in **Factor VIII** [2], leading to bleeding disorders, yet is just one form of hemophilia. *Hemophilia C* - This form is **autosomal recessive** and not linked to the X chromosome, primarily affecting both genders equally. - It involves a deficiency of **Factor XI**, distinguishing it from the X-linked nature of A and B. *Hemophilia B* - Like Hemophilia A, it is X-linked but by itself does not account for all hemophilias. - It results from a deficiency in **Factor IX**, yet the question about X-linkage applies to both A and B together. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Genetic Disorders, p. 151. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Red Blood Cell and Bleeding Disorders, pp. 670-671.

Question 1

Flow cytometry is primarily used for analysis of which of the following cell types?

Accepted Answer

Lymphocytes

Answer

Platelets

Answer

Erythrocytes

Answer

Basophils

Question 2

Where are Dutcher bodies typically seen?

Accepted Answer

Bone marrow

Answer

Brain

Answer

Spleen

Answer

Liver

Question 3

Which factor is primarily found in cryoprecipitate?

Accepted Answer

Factor VIII

Answer

Factor II

Answer

Factor V

Answer

Factor IX

Question 4

Heinz bodies are removed by?

Accepted Answer

Macrophages

Answer

Lymphocytes

Answer

Neutrophils

Answer

Fibroblasts

Question 5

Which of the following statements about thrombotic thrombocytopenic purpura is false?

Accepted Answer

Grossly abnormal coagulation tests

Answer

Microangiopathic hemolytic anemia

Answer

Thrombocytopenia

Answer

Normal complement level

Question 6

In which condition is the 'Swiss cheese pattern' typically observed in pathology?

Accepted Answer

Endometrial hyperplasia

Answer

Disseminated intravascular coagulation (DIC)

Answer

Acute myocardial infarction

Answer

Chronic gastritis

Question 7

Which of the following is a feature not typically associated with Hereditary Spherocytosis?

Accepted Answer

Direct Coombs Positive

Answer

Gall stones

Answer

Splenomegaly

Answer

Increased Osmotic Fragility

Question 8

Which of the following is a quantitative defect in globin synthesis?

Accepted Answer

Thalassemia

Answer

Sickle cell hemoglobinopathy

Answer

G6PD deficiency

Answer

Diamond-Blackfan syndrome

Question 9

What is the most important diagnostic feature for beta thalassemia trait?

Accepted Answer

Increased HbA2

Answer

Increased HbF

Answer

Decreased MCH

Answer

Decreased MCV

Question 10

Which type(s) of hemophilia is/are X-linked?

Accepted Answer

Both A & B

Answer

Hemophilia A

Answer

Hemophilia B

Answer

Hemophilia C

Hematopathology — MCQs

Hematopathology — MCQs

On this page

Practice by Chapter

Want unlimited practice?