[A case of hyperammonemic encephalopathy in a patient with recurrent colon cancer treated with modified FOLFOX6].

FOLFOX therapy is a commonly used chemotherapeutic regimen against recurrent and unresectable colon cancer. However, its acute neurotoxicity is rare and not well recognized. We herein report a case of mFOLFOX6-induced hyperammonemic encephalopathy in a patient having recurrent colon cancer.

Cytomegalovirus colitis after systemic chemotherapy in a patient with recurrent colon cancer: a case report.

Introduction: The occurrence of cytomegalovirus colitis is well known in immunosuppressed patients, such as neoplastic patients following chemotherapy, although its exact etiology remains unclear.

Case Presentation: We present a case of cytomegalovirus colitis occurring in a 77-year-old man with vomiting and diarrhea 2 weeks after initial systemic chemotherapy consisting of 5-fluorouracil, leucovorin and irinotecan for a recurrent colorectal cancer. Initial colonoscopy revealed multiple punched-out ulcers in the transverse colon and the diagnosis of cytomegalovirus was based on positive cytomegalovirus antigen detected by indirect enzyme antibody method, although immunohistological examination of tissues biopsied at colonoscopy was negative.

[Marked response to S-1 chemotherapy for para-aortic lymph node metastasis arising from gastric cancer].

We report a recurrent case of gastric cancer with para-aortic lymph node metastasis that showed a marked response to systemic chemotherapy consisting of S-1 alone. A 70-year-old male was admitted to our hospital with appetite loss and left abdominal pain. He had a history of distal gastrectomy due to the advanced gastric cancer.