Exploring castleman disease in a cohort of hispanic patients: a recognition to its histopathology.

Castleman disease is a clinicopathological entity that shares features with hematological, rheumatological, and infectious diseases, making accurate diagnosis essential. The objective of this study is to characterize the clinical and pathological characteristics of CD in a Mexican cohort. A retrospective study was conducted on adult Mexican patients diagnosed with unicentric (UCD) and multicentric (MCD) Castleman disease from 1985 to 2023. Clinical and histopathological characteristics typical of UCD and MCD were observed. POEMS-associated MCD showed a higher relapse rate. The mixed histopathological variant was more prevalent in MCD. Immunohistochemical expression of VEGF-A was elevated in all CD cases. A multidisciplinary diagnostic approach is crucial for accurately categorizing CD. The mixed histopathological variant was more common than previously reported, especially in MCD. Further studies are needed to validate VEGF-A as a biomarker for CD.