[The nature of so called local sarcoid reaction and its diagnosis].

Local sarcoid reaction was detected in biopsy and surgical materials from 25 patients and 2 autopsies. This reaction develops in different neoplastic and non-neoplastic diseases in the area of location of the main lesion and/or in regional lymph nodes. Essentially, local sarcoid reaction is considered to be sarcoidosis in miniature. In the past 22 years the incidence of sarcoid reaction has increased 3.4 times and become important in routine pathology practice.