<unk>  <unk>  is a type of lymphoid hyperplasia and is classified as a lymphadenopathy, which means a disease of the lymph nodes. It is caused by a stimulation of the B cell compartment and by abnormal cell growth of secondary follicles. This typically occurs in the cortex without disrupting the lymph node capsule. The follicles are pathologically polymorphous, are often contrasting and varying in size and shape.<unk>  is distinguished from<unk>  lymphoma in its polyclonality and lack of bcl-2 protein expression, whereas<unk>  lymphoma is monoclonal, and expresses bcl-2.
Follicular hyperplasia
Lymphoid hyperplasia
Perifollicular mucinosis
Microglandular hyperplasia
Hyperkeratinization
Pseudopolyps
Xanthogranulomatous inflammation
Reticular formation