Bone marrow biopsy showing numerous plasma cells

Plasma Cell Dyscrasias

Overview Plasma cell disorders involve the abnormal proliferation of plasma cells. These B-cell clones synthesize and secrete a single monoclonal immunoglobulin or its fragments e.g. free light chains, and free heavy chains. These monoclonal immunoglobulins are termed M proteins and…

Diffuse Large B-cell lymphoma

Lymphomas

Overview Lymphomas are tumors arising from lymphoid cells. They have a much less dramatic presentation than leukemias. They are classified into 2 major groups – Hodgkin’s and Non-Hodgkin’s – based on morphology and immunophenotype. 2/3 of lymphoma present with Lymphadenopathy.…

Howel-jolly bodies

Myelodysplastic Syndromes

Myelodysplastic syndromes are characterized by dysplastic and ineffective hematopoiesis – bone marrow failure**.** It is sometimes described as “pre-leukemic” since there is a risk of transformation into acute leukemia (30%). In MDS, there is varied anemia, thrombocytopenia, and leukopenia. Hence…

Blood film showing numerous granulocytic forms, including band cells and immature myeloid cells

Myeloproliferative Neoplasms

Overview Myeloproliferative neoplasms are abnormal proliferations of one or more terminal myeloid cell lines in the peripheral blood (RBCs, WBCs, platelets). Myeloproliferative neoplasms are poorly characterized and poorly undersood. They all cause a predilection to extramedullary hematopoiesis, myelofibrosis, and transformation…

Smudge cells

Chronic Lymphocytic Leukemia

CLL is characterized by a progressive accumulation of monoclonal, mature, non-functional B lymphocytes. CLL is usually discovered on routine blood tests as an isolated lymphocytosis. It is defined by a > 5000/uL B-lymphocytes in the peripheral blood that are marked…

Blast cell

Acute Leukemia

Overview Acute Leukemia is an abnormal proliferation of blasts in either the peripheral myeloid or lymphoid cell lines. Acute Leukemias are of rapid onset. The blasts dramatically affect the bone marrow and consume nutrients and other resources leading to a…