title: Management of patients with metastatic adenocarcinoma of unknown origin: a Southwest Oncology Group study.
abstract: The Southwest Oncology Group evaluated 51 patients with a histologic diagnosis of metastatic adenocarcinoma and an occult primary tumor. Even though all patients received an extensive diagnostic evaluation, only six (12%) primary sites were found. Thirty-six patients whose primary tumor sites remained occult were randomized to receive either 5-FU or combination chemotherapy (5-FU, doxorubicin, and cyclophosphamide [FAC]). There were no responses in either group. The median survival with 5-FU was 105 days and with FAC was 95 days. Toxicity with FAC was more common and more severe.
mesh_terms: D000230:Adenocarcinoma / Q000188:drug therapy / Q000556:secondary*; D003520:Cyclophosphamide / Q000008:administration & dosage* / Q000009:adverse effects; D004317:Doxorubicin / Q000008:administration & dosage* / Q000009:adverse effects; D004341:Drug Evaluation; D004359:Drug Therapy, Combination; D005472:Fluorouracil / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D008875:Middle Aged; D009325:Nausea / Q000139:chemically induced; D009503:Neutropenia / Q000139:chemically induced; D011379:Prognosis; D011897:Random Allocation
chemical_list: D004317:Doxorubicin; D003520:Cyclophosphamide; D005472:Fluorouracil