Metastatic breast carcinoma presenting as persistent diarrhea.

Patients with breast carcinoma metastatic to the colon generally present with multiple symptoms, usually pain, vomiting, nausea, and ascites. We describe a patient who presented only with persistent diarrhea, underwent surgery for colon cancer, and, on pathological evaluation of the surgical specimen, was found to have metastatic breast cancer affecting the colon. Metastatic breast cancer should therefore be suspected in patients with a history of breast cancer and diarrhea of unknown cause that is not accompanied by other symptoms.

Lack of correlation between mycoplasma induced IFN-gamma production in vitro and natural killer cell activity against FLD-3 cells.

Interferon (IFN) stimulates natural killer (NK) cell-mediated lysis of tumor cells. However, it is not clear whether IFN production is essential for NK cells to lyse their target cells in vitro, especially in long-term (greater than 18 hrs) assays. To investigate this, 0.