Lara-Torres, César OctavioCésar OctavioLara-TorresOrtíz Hidalgo, Carlos FedericoCarlos FedericoOrtíz Hidalgo2023-01-272023-01-272008https://scripta.up.edu.mx/handle/20.500.12552/247010.1007/s12308-008-0015-7Dear Editor: Plasma cell neoplasms may display diverse cytoarchitectural variations, including a diffuse, nested, paragangliomatous, and angiomatoid arrangements [1]. We present herein a case of a well-differentiated (Marschalko-type) plasmacytoma in which neoplastic plasma cells arranged in a pseudofollicular configuration resemble thyroid follicles filled with ‘colloid-like’ material. © Journal of HematopathologyenResource Types::text::Non-primary product