Quick Review Cards for Medical Laboratory Science

Hematopoietic Neoplasms*continued Hematology Review 319

DISORDER EXPLANATION EXAMPLE(S) OTHER

Leukemia

Lymphoma

Malignant neoplasms involving

unregulated proliferation of

hematopoietic stem cells. Abnormal

cells in bone marrow & peripheral

blood.

Malignant neoplasm of lymphoid

cells in lymphatic tissues or lymph

nodes.

Acute lymphoblastic

leukemia (ALL),

chronic lymphocytic

leukemia (CLL)

Hodgkin lymphoma,

non-Hodgkin

lymphoma

Classified as acute or chronic, &

lymphoid or myelogenous. See

“Common Leukemias” card for

more detail.

Solid tumors. Classified as B or T cell.

Can spread to bone marrow, then

malignant cells can be present in

peripheral blood (leukemic phase).

*Neoplasm = new growth; unregulated growth of a single transformed cell; may be benign or malignant. A benign neoplasm can progress to a malignant neoplasm.