What is cutaneous lymphoid hyperplasia?

Cutaneous lymphoid hyperplasia (CLH) is considered a benign lymphoid reactive process that results from various antigenic stimuli and may have potential for progression to overt lymphoma. CLH lesions may closely resemble lymphoma both clinically and histologically.

What is a lymphoid proliferation?

Lymphoid proliferations include benign conditions (reactive hyperplasia and lymphadenitis), AtLP and malignant lymphomas. The separation of AtLP from malignant lymphomas requires correlation of the clinical, morphologic and molecular studies.

What is lymphoid nodular hyperplasia?

DEFINITION. Nodular lymphoid hyperplasia (NLH) of the gastrointestinal tract is characterized by the presence of multiple small nodules, between 2 and 10 mm in diameter. Although it may be detected in the stomach, large intestine or rectum[1], it is more often distributed in the small intestine.

What is lymphoid hyperplasia appendix?

Lymphoid hyperplasia of the appendix results in discrete thickening of the lamina propria [15], which often effaces the submucosal layer. Of note is the fact that isolated thickening of the lamina propria is a finding histologically associated with lymphoid hyperplasia and not appendicitis.

What does lymphoid aggregate mean?

Lymphoid aggregate/infiltrate: A collection of B cells, T cells, and supporting cells, present within the stroma of various organs. The term can be used to describe endogenous lymphoid tissue or acquired lymphoid tissue.

What is cutaneous lymphoma?

Cutaneous T-cell lymphoma causes scaly patches or bumps called lesions or tumors. The cancer is also known as lymphoma of the skin. It is a type of non-Hodgkin lymphoma. Cutaneous T-cell lymphoma is usually a slow-growing cancer.

What is mucosal lymphoid hyperplasia?

Intestinal nodular lymphoid hyperplasia (NLH) is a benign lymphoproliferative disease characterized by a diffuse or focal hyperplasia of lymphoid follicles along the intestine due to an accumulation of nonmalignant lymphoid cells in the gut mucosa (2).

What is lymphoid follicular hyperplasia?

Follicular lymphoid hyperplasia (FLH) is characterized as a non-neoplastic lymphoproliferative disease, and is also known as nodular lymphoid lesion and pseudolymphoma. This rare disease is known to affect various organs including the skin, lungs, stomach, breasts, intestine, spleen, pancreas, and liver [1, 2].

What is reactive lymphoid hyperplasia?

Introduction: Reactive lymphoid hyperplasia is a benign nodular lesion characterized by marked proliferation of non-neoplastic, polyclonal lymphocytes forming follicles. The lesion is found in various organs such as skin, orbit, lung, gastrointestinal tract, and liver.