Beltrán Brady E, Castillo Jorge J, Quiñones Pilar, Morales Domingo, Paredes Antonio, Nieto Giuliana, Miranda Roberto N, Torres-Cabala Carlos A
*Department of Oncology and Radiotherapy, Edgardo Rebagliati Martins Hospital, Lima, Peru; †Division of Hematology and Oncology, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI; ‡Department of Pathology, Edgardo Rebagliati Martins Hospital, Lima, Peru; §Division of Dermatology, Edgardo Rebagliati Martins Hospital, Lima, Peru; Departments of ¶Hematopathology; ‖Pathology; and **Dermatology, MD Anderson Cancer Center, Houston, TX, USA.
Am J Dermatopathol. 2014 Nov;36(11):e189-93. doi: 10.1097/DAD.0000000000000050.
Extranodal marginal zone lymphoma (MZL) of mucosa-associated lymphoid tissue usually originates from cutaneous or mucosal surfaces. A rare site of involvement is the subcutaneous tissue of any location. Here, we describe a 58-year-old man who presented with bilateral extranodal MZL of mucosa-associated lymphoid tissue from ocular adnexae that involved subcutaneous tissue and subsequently extended to multiple anatomical locations in the head and neck, upper back, and arm. The neoplastic cells expressed B-cell markers, and the plasma cells expressed IgG4. The unusual pattern of infiltration of this extranodal MZL and the possible significance of IgG4 expression in this case are discussed.
黏膜相关淋巴组织的结外边缘区淋巴瘤(MZL)通常起源于皮肤或黏膜表面。一个罕见的受累部位是任何部位的皮下组织。在此,我们描述一名58岁男性,其双侧眼附属器黏膜相关淋巴组织结外MZL累及皮下组织,随后扩展至头颈部、上背部和手臂的多个解剖部位。肿瘤细胞表达B细胞标志物,浆细胞表达IgG4。讨论了这种结外MZL不寻常的浸润模式以及本例中IgG4表达的可能意义。