%0 Journal Article %T A Case of Sarcoidosis-lymphoma Syndrome: Importance of Brain Biopsy %A Hideki Kanai %A Mitsuhito Mase %A Noritaka Aihara %A Takayuki Ohno %A Tomoyasu Yamanaka %J Archive of "NMC Case Report Journal". %D 2019 %R 10.2176/nmccrj.cr.2018-0223 %X Sarcoidosis is occasionally associated with malignant lymphoma. Cases of sarcoidosis associated with malignant lymphoma are called sarcoidosis-lymphoma syndrome. We report a 63-year-old man with sarcoidosis associated with primary central nervous system lymphoma (PCNSL). Definitive diagnosis by clinical and radiological findings was difficult. Finally, brain biopsy could produce the correct diagnosis. We could provide appropriate treatment for PCNSL and the patient has survived over 2 years. Thus, it is very important to make an early definitive diagnosis by biopsy for intracranial lesion, because it can prolong survival in patients with sarcoidosis %K primary central nervous system lymphoma %K sarcoidosis-lymphoma syndrome %K sarcoidosis %K biopsy %K differential diagnosis %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6476816/