The rare report of unicentric Castleman disease with concurrent myasthenia gravis and paraneoplastic pemphigus: a case report with a focused review of the literature

This case highlights a rare and diagnostically challenging overlap of CD, MG, and PNP. Accurate recognition required integration of histopathology, immunofluorescence, and serological testing, achieved through multidisciplinary collaboration across thoracic surgery, neurology, dermatology, and pathology. Clinicians should remain vigilant for such complex presentations, as early diagnosis and coordinated management are essential to improving outcomes in rare autoimmune-associated CD.