title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 51-1991. A 68-year-old man with recurrent fever and diarrhea after treatment for lymphoma.
mesh_terms: D000368:Aged; D000749:Anemia, Megaloblastic / Q000473:pathology*; D001853:Bone Marrow / Q000473:pathology; D005494:Folic Acid Deficiency / Q000139:chemically induced; D006412:Hematopoietic Stem Cells / Q000473:pathology; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000009:adverse effects; D011565:Psoriasis / Q000188:drug therapy
chemical_list: D008727:Methotrexate