Author/Editor		Hočevar, M; Bračko, M; Pogačnik, A; Vidergar-Kralj, B; Bešić, N; Žgajnar, J
Title		Role of imprint cytology in the intraoperative evaluation of sentinel lymph nodes for malignant melanoma
Type		članek
Source		Eur J Cancer
Vol. and No.		Letnik 39, št. 15
Publication year		2003
Volume		str. 2173-8
Language		eng
Abstract		Controversy exists over the utility of different methods for intra-operative sentinel lymph node (SLN) evaluation in patients with malignant melanoma (MM). The aim of this study was to evaluate the role of intra-operative imprint cytology (IC) in patients with MM. 215 SLNs from 99 patients with MM were examined by IC and results compared with the results of permanent sections. 24 patients had MM deposits in their SLNs and this was confirmed by histological examination. Intraoperative IC was positive in 11 of these patients (46% sensitivity). In addition, there were three false-positive IC diagnoses (79% positive predictive value); one of these was due to contamination during the sectioning of the SLN. The specificity and the negative predictive values of the IC were 96 and 85%, respectively. IC is a valuable method of intra-operative SLN evaluation which can spare approximately half of the patients with clinically occult regional metastases from a second surgical procedure. However, special care must be taken to avoid false-positive results due to contamination.
Descriptors		MELANOMA SKIN NEOPLASMS LYMPHATIC METASTASIS LYMPH NODE EXCISION BIOPSY IMMUNOHISTOCHEMISTRY