[Preoperative and intraoperative diagnosis of surgical thyroid diseases: morphological aspects].

Experience of the cytological investigation application of a fine-needle aspiration biopsy (FNAB) and of intraoperative express diagnosis (IOED) of nodular damage of thyroid gland was summarized. The FNAB sensitivity was 96.9%, specificity--86.2%, diagnostic validity--89.8%; IOED--98.6, 99.5 and 94.4% correspondingly. Application of FNAB and IOED in the united diagnostic algorithm permits to provide rational choice of the treatment method and an adequate volume of the operation for nodular goiter.