Malignant neoplasm and Myeloma

Malignant neoplasm noun - A tumor that is malignant and tends to spread to other parts of the body.

Myeloma and malignant neoplasm are semantically related. In some cases you can replace term "Myeloma" with "Malignant neoplasm", this terms are similar.

Myeloma noun - A tumor of the bone marrow (usually malignant) composed of cells normally found in bone marrow.

Malignant neoplasm and myeloma are semantically related. Sometimes you can use "Malignant neoplasm" instead a noun "Myeloma".