[2001 Standards, Options and Recommendations: practice guidelines for difficult diagnoses in surgical pathology or cytopathology in cancer patients].

Context: The Standards, Options and Recommendations (SOR) project, which started in 1993, is a collaboration between the Federation of French Cancer Centers (FNCLCC), the 20 French Regional Cancer Centers, and specialists from French public universities, general hospitals and private clinics. The main objective is the development of clinical practice guidelines to improve the quality of health care and the outcome of cancer patients.

Objectives: To elaborate practice guidelines for difficult diagnoses in surgical pathology or cytopathology in cancer patients.