Thirawut SirikhamWeeratian TawanwongsriSuthinee RutninKumutnart ChanprapaphVasanop VachiramonSuratthani HospitalFaculty of Medicine, Ramathibodi Hospital, Mahidol University2020-05-052020-05-052020-01-01Case Reports in Dermatology. (2020), 76-81166265672-s2.0-85083835737https://repository.li.mahidol.ac.th/handle/20.500.14594/54657© 2020 The Author(s). Published by S. Karger AG, Basel. We report a 23-year-old woman who presented with generalized scaly erythematous rash predominately on the upper trunk and hemorrhagic stomatitis. The histopathologic and immunopathologic findings were consistent with the diagnosis of paraneoplastic pemphigus. Castleman's tumor was diagnosed with computed tomography and exploratory laparotomy. A partial clinical improvement was observed after complete tumor removal and intravenous immunoglobulin administration. However, the patient died as a result of septicemia.Mahidol UniversityMedicineArticleSCOPUS10.1159/000507357