A 36-year-old @entity1 presented with a red nodule on his left shoulder. Histologically, there were variously sized, irregularly shaped nests throughout the dermis partly extending into the subcutaneous tissue. Masses of centrocyte-like cells were situated in the center of the @entity5 nests and accompanied by adjacent secondary follicle structures. Partial follicular colonization was seen. Massive plasmacytoid cells were located in the papillary dermis and the periphery of the @entity5 nests. Immunohistochemically, these centrocyte-like cells were positive for @entity1075 and alkaline phosphatase, and negative for @entity5893 and @entity2282 . Cytoplasm of the plasmacytoid cells was positive for IgG and lambda-light chain, and negative for IgM, IgA, and kappa-light chain. Monotypic immunoglobulin staining including light chain restriction was shown. Clonal immunoglobulin heavy chain gene rearrangement by Southern blot analysis was shown in the @entity5 tissue. Morphologic, immunohistochemical, and molecular studies revealed that this @entity1 had a cutaneous marginal zone @entity1892 -associated lymphoid tissue type. Electron beam (total 40 Gy) irradiation was applied. The @entity5 disappeared completely. Neither local recurrence or @entity3 have appeared during 3 years of follow-up.

Cutaneous marginal zone XXXX : a case accompanied by massive plasmacytoid cells.

@entity1 :: ('9606', 'Species') :: ['patient', 'man'] @entity1075 :: ('930', 'Gene') :: ['CD19'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity5893 :: ('921', 'Gene') :: ['CD5'] @entity2282 :: ('4311', 'Gene') :: ['CD10'] @entity1892 :: ('MESH:D016393', 'Disease') :: ['B-cell lymphoma of mucosa'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis']
@entity1892 :: (MESH:D016393,Disease) :: ['B-cell lymphoma']
