ABSTRACT
The frozen section is important in breast diagnosis. We compare the results between frozen section and definitive diagnosis attending to biological conduct, margins and centinel lymphnode in 127 cases performed during a year. 94 cases were for diagnostic purpose, The 34 positive cases were confirmed. In 60 negative cases, one had a microscopic focus of ductal carcinoma in situ. The margins were corrected in 54/55, one showed carcinoma in less than 2mm from the border. 30 cases of centinel lymph node we studied, 4 were positive and 26 negative. There were no false positive cases. We found 2 cases with metastasis of 2 and 5 mm. in the definitive biopsy. The sensitivity, specificity, positive and negative predictive value in diagnosis was 94 percent, 100 percent, 100 percent, 96 percent respectively and in centinel lymph node was 66 percent, 100 percent, 100 percent y 92 percent.
Subject(s)
Humans , Female , Sentinel Lymph Node Biopsy , Biopsy/methods , Breast Neoplasms/pathologyABSTRACT
The fine-needle aspirates are used as the first step in the diagnostic management of thyroid nodules, they are considered cost-effective compared with the other approaches. During 2005 we studied 47 patients with cytology in the preoperative. We compared the FNAB results with the biopsy of the specimen to establish the accuracy of this method. The diagnosis of papillary carcinoma was correctly made in 18 of 47 histologically proven cases. There were no false positive cases. Of the 20 negative cases, 13 had benign diseases; 1 was a false negative with a follicular carcinoma; 3 cases had papillary microcarcinomas and 3 minimally invasive follicular carcinomas. The sensibility and specificity was 100 percent and 72 percent respectively. The positive predictive value was 100 percent and negative predictive value 65 percent. PAAF of the thyroid gland proved to be an excellent strategy in the preoperative diagnosis for the management of the thyroid nodules.