Preoperative skin tumours thickness determination by high-frequency ultrasound on head and neck region
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1University of Nis, Medical faculty, Department of Deratovenereology, Clinic of dermatology and venereology Clinical centre Nis, Nis. bukid@eunet.rs
Background:
High-frequency ultrasound is non-invasive imaging method for examination of skin tumours.
Objective:
The aim of our study was to examine validity of 20-MHz ultrasound in preoperative determination of skin tumour thickness localized on head and neck region as a potentially useful tool for planning of the surgical intervention.
Methods:
Seventy-three different skin tumours were preoperatively examined using Dermascan C (Cortex Technology, Denmark) 20-MHz ultrasound equipment. Maximal vertical thickness of tumours was preoperatively determined by ultrasound, and after surgical excision of tumours, on pathohistological preparations using Nippon-Kogaku ocular micrometre. All patohistological specimens were controlled for presence of tumour cells on specimens' margins.
Results:
Obtained correlation was very high, r = 0.82, without significant statistical difference (P < 0.01) between dimensions determined by 20-MHz ultrasound and histometry. There were no pathohistological specimens with tumours cells found on margins.
Conclusion:
Examination of skin tumours by 20-MHz ultrasound gives reliable additional information about tumour dimensions, sometimes important for therapeutic strategy.
