Course Map: Miscellaneous Tumors: Hematopoietic and Lymphoid Neoplasms

Hematopoietic and Lymphoid Neoplasms
Lymphomas and plasmacytomas in the bladder do not differ from those occurring elsewhere. The majority are part of a systemic disease; primary lymphoma or plasmacytoma of bladder is uncommon [107]. Most of the lymphomas are of diffuse large cell or small lymphocytic types and are of B-cell origin. Follicular, mantle cell and plasmacytoid types are much less common. Except at autopsy, Hodgkin disease and leukemic infiltrates are rare.
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	Figure 1: Lymphoma in the muscularis propria. Small cell lymphocytic type, B-cell origin.
	Figure 2: Lymphoma in the muscularis propria. This is the large cell type. Note that the cells are discrete and without any organoid morphology. They have very little cytoplasm.
	Figure 3: Malignant lymphoma, small B-cell type. A mucosa-associated lymphoid tissue (MALT) lymphoma.