Sandbox: sadaf

Differentiating Pancytopenia from Other Diseases

• There are no other mimickers of pancytopenia, as the diagnosis can be unequivocally established by laboratory testing (complete blood count).

Category	Condition	Etiology	Mechanism			Congenital	Acquried	Clinical manifestations									Para−clinical findings									Gold standard	Associated findings
								Demography	History	Symptoms			Signs
																	Lab Findings								Imaging
										Appearance	Fever	Bleeding	BP	Splenomegaly	Jaundice	Other	CBC			PBS	Bone marrow exam	PT	PTT	UA
			Bone marrow infiltration	Bone marrow failure	Destruction/ sequestration/ redistribution												Plt	HB	WBC
Hematologic disorders	Myelodysplastic syndrome	Bone marrow infiltration Ineffective hematopoiesis	+	+	-	±	+	Elderly	Exposure to Chemotherapy Radiation therapy Tobacco smoke	Petechiae Purpura Diffuse erythematous rash	+	+	Nl	+	+	Shortness of breath Fatigue Pallor	↓	↓	↓	Ovalomacrocytosis Basophilic stippling Howell-Jolly body Dysplastic neutrophils	Impaired myeloid maturation Dyserythropoiesis Dysgranulopoiesis Dysmegakaryocytopoiesis Hypercellular bone marrow Fibrosis	Nl	Nl	Nl	NA	Bone marrow examination + clinical manifestation	Might transformed to acute leukemia
	Malignancies such as: Acute leukemia Chronic leukemia Multiple myeloma Metastatic cancer	Bone marrow infiltration Ineffective hematopoiesis Immune mediated	+	+	+	±	±	Any, more in adults	Exposure to chemicals Radiation Pre-existent blood disorders	Petechiae	+	+	Nl	+	-	Weakness	↓	↓	↓	Pancytopenia	Blast cells	↑	↑	Hemoglobinuria	NA	Bone marrow examination	Tumor lysis syndrome Infection CNS involvement DIC
	Myelofibrosis	Bone marrow infiltration	+
	Fanconi anemia
	Condition	Etiology	Bone marrow infiltration	Bone marrow failure	Destruction/ sequestration/ redistribution	Congenital	Acquried	Demography	History	Appearance	Fever	Bleeding	BP	Splenomegaly	Jaundice	Other signs	Plt	HB	WBC	PBS	Bone marrow exam	PT	PTT	UA	Imaging	Gold standard	Associated findings
	Aplastic anemia	Immune destruction		+
	Paroxysmal nocturnal hemoglobinuria	Immune destruction		+
	Disseminated intravascular coagulation	Consumption
	Dyskeratosis congenital/telomere biology disorders
	Shwachman-Diamond syndrome					+
Immunology/ Rheumatology	Condition	Etiology	Bone marrow infiltration	Bone marrow failure	Destruction/ sequestration/ redistribution	Congenital	Acquried	Demography	History	Appearance	Fever	Bleeding	BP	Splenomegaly	Jaundice	Other signs	Plt	HB	WBC	PBS	Bone marrow exam	PT	PTT	UA	Imaging	Gold standard	Associated findings
	SLE
	Felty syndrome
	Wiskott Aldrich syndrome					+
	GATA2 deficiency					+
	Hemophagocytic lymphohistiocytosis (HLH)					+
GI disorders	Portal hypertension/cirrhosis	Splenomegally
	Storage diseases (eg, Gaucher)	Splenomegaly Bone marrow infiltration	+		+
Infections	Condition	Etiology	Bone marrow infiltration	Bone marrow failure	Destruction/ sequestration/ redistribution	Congenital	Acquried	Demography	History	Appearance	Fever	Bleeding	BP	Splenomegaly	Jaundice	Other signs	Plt	HB	WBC	PBS	Bone marrow exam	PT	PTT	UA	Imaging	Gold standard	Associated findings
	Sepsis	Bone marrow infiltration
	Viral infection such as HIV, hepatitis, Epstein-Barr virus	Marrow suppression Splenomegaly		+	+
Nutritional	Megaloblastic anemia	Ineffective hematopoiesis		+
	Excessive alcohol	Ineffective hematopoiesis
	Other (eg, copper deficiency, zinc toxicity)	Ineffective hematopoiesis
	Malnutrition	Ineffective hematopoiesis
Medications	Medications such as: Cytotoxic drugs Idiosyncratic reactions to medications	Immune destruction		+
Category	Condition	Etiology	Bone marrow infiltration	Bone marrow failure	Destruction/ sequestration/ redistribution	Congenital	Acquried	Demography	History	Appearance	Fever	Bleeding	BP	Splenomegaly	Jaundice	Other signs	Plt	HB	WBC	PBS	Bone marrow exam	PT	PTT	UA	Imaging	Gold standard	Associated findings