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PubMed1985

Asymptomatic primary biliary cirrhosis. A progress report on long-term follow-up and natural history.

Thirty-six patients presenting with asymptomatic primary biliary cirrhosis have been followed for a median period of 11.4 yr, extending by 5 yr a previously reported median follow-up study of 6 yr. Life table survival analysis indicates that the overall survival of this subgroup of patients with primary biliary cirrhosis continues to remain similar to that of the general population (p = 0.91). Over this period, 15 patients developed symptoms and 8 patients died, 6 from liver disease; 21 patients remained in an asymptomatic state. Portal granulomas on initial liver biopsy were the only finding that correlated with a normal survival and a continued asymptomatic state (p = 0.03). In contrast, associated autoimmune disorders (thyroiditis, sicca syndrome, CRST syndrome, Raynaud's phenomenon) correlated with decreased survival (p = 0.01). No other clinical, laboratory, or histologic features correlated with survival or the development of symptoms. This extended follow-up study (median 11.4 yr) indicates that many patients with asymptomatic primary biliary cirrhosis have a benign outcome. Although 42% developed signs or symptoms of progressive disease at variable times up to 14 yr from presentation, the group survival remained similar to the general population.

Adult↗

PubMed1997

A clinical trial to evaluate the worth of preoperative multimodality therapy in patients with operable carcinoma of the rectum: a progress report of National Surgical Breast and Bowel Project Protocol R-03.

PURPOSE: National Surgical Adjuvant Breast and Bowel Project Protocol R-03 was designed to determine the worth of preoperative chemotherapy and radiation therapy in the management of operable rectal cancer. METHODS: Thus far, 116 patients of an eventual 900 with primary operable rectal cancer have been randomized to receive multimodality therapy to begin preoperatively (59 patients) or identical therapy beginning after curative surgery (57). All patients received seven cycles of 5-fluorouracil (FU)/leucovorin (LV) chemotherapy. Cycles 1 and 4 through 7 used a high-dose weekly FU regimen. In Cycles 2 and 3, FU and low-dose LV chemotherapy was given during the first and fifth week of radiation therapy (5,040 cGy). The preoperative arm (Group 1) received the first three cycles of chemotherapy and all radiation therapy before surgery. The postoperative arm (Group 2) received all radiation and chemotherapy after surgery. Primary study end points included disease-free survival and survival. Secondary end points included local recurrence, primary tumor response to combination therapy, tumor downstaging, and sphincter preservation. RESULTS: Overall treatment-related toxicity was similar in both groups. Although seven preoperative patients had events after randomization that precluded surgery, eight events occurred during an equivalent follow-up period in the postoperative group. No patient was deemed inoperable because of progressive local disease. Sphincter-saving surgery was intended in 31 percent of Group 1 patients and 33 percent of Group 2 patients at the time of randomization. Such surgery was actually performed in 50 percent of the preoperatively treated patients and 33 percent of the postoperatively treated patients. The use of protective colostomy in patients undergoing sphincter-sparing surgery and the development of perioperative complications in all surgical patients were similar in both groups. There was evidence of tumor downstaging in evaluable patients undergoing preoperative therapy, with 8 percent of Group 1 patients having had a pathologic complete response. CONCLUSION: These data do suggest that the preoperative chemotherapy and radiation therapy regimen used are, at least, as safe and tolerable as standard postoperative treatment. There is presently a trend to tumor downstaging and sphincter preservation in the preoperative arm. Whether this arm will have greater or lesser survival and long-term toxicity awaits the completion of this relevant study.

Adenocarcinoma↗

PubMed1980

Chemotherapy for squamous cell carcinoma of the head and neck: a progress report.

This review highlights the most important recent advances in the chemotherapeutic management of patients with squamous cell carcinoma of the head and neck. Previous chemotherapy trials must be interpreted with caution in the absence of information concerning important prognostic variables, such as prior treatment, nutritional and performance status, and the heterogeneity of primary sites. In patients who have recurrent or metastatic disease, methotrexate, platinum, and bleomycin are three active drugs when used as single agents. There is no evidence that high dose methotrexate therapy is superior to more conventional weekly intravenous administration of methotrexate in the treatment of recurrent disease. Platinum is a new agent that has demonstrated activity against hematogenous as well as regional disease. In the absence of evidence of a dose-response curve for platinum, the lower dosage schedules that can be used with acceptable toxicity on an outpatient basis should be selected. Combination chemotherapy has resulted in a high proportion of objective responders and approximately 20 per cent complete remissions with any of several platinum containing regimens. However, the median duration of response remains short, and none of the combination drug programs has as yet been established to be superior to single agent chemotherapy in a randomized trial. Both single agent and combination chemotherapy programs have been used prior to initial surgery or radiation in patients with advanced inoperable but nonmetastatic disease. Despite dramatically higher response rates over those obtained with the same drugs used in recurrent disease, there is as yet no evidence that chemotherapy given in this manner has resulted in improved disease free or overall survival compared with local treatment alone. Similarly, the use of adjuvant chemotherapy following tumor clearance to eradicate potential micrometastatic disease is currently under investigation and cannot be recommended in the absence of a controlled trial. This article reviews the clinical trials currently in progress both for patients with recurrent squamous cell carcinoma of the head and neck and those with advanced local or regional disease.

Antineoplastic Agents↗

PubMed1972