Paraganglia of the Gallbladder: An Underrecognized Incidental Finding and Potential Diagnostic Pitfall.

Context.—: The identification of paraganglia (PG) in the gallbladder (GB) is infrequent, and easily overlooked as it is not something routinely reported. Occasionally they may be misinterpreted as neoplastic cells, such as low-grade carcinomas, germ cell tumors, or because of their close resemblance to neuroendocrine cells, as low-grade neuroendocrine neoplasms.

Intracytoplasmic crystalline inclusions in chronic lymphocytic leukemia.

Neoplastic B cells may have cytoplasmic inclusions that are visible in routine peripheral blood smears by light microscopy.