Complete Spontaneous Regression of Hepatosplenic T-Cell Lymphoma After Surgical Biopsy.

F-FDG PET/CT for a 74-year-old man with elevated serum soluble interleukin 2 receptor showed multiple intense uptake in the liver, spleen, and bone. A surgical biopsy from 2 of liver tumors confirmed hepatosplenic αβ T-cell lymphoma. One and a half months after biopsy, FDG PET scan was performed again for staging before starting chemotherapy, and it showed the complete disappearance of all of the lesions. The excisional biopsy could be a possible trigger of his spontaneous regression.