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. 2014 Jan 22;48(1):29-34.
doi: 10.2478/raon-2013-0084. eCollection 2014 Mar.

The role of ultrasound and ultrasound-guided fine needle aspiration biopsy of lymph nodes in patients with skin tumours

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The role of ultrasound and ultrasound-guided fine needle aspiration biopsy of lymph nodes in patients with skin tumours

Francesco Maria Solivetti et al. Radiol Oncol. .

Abstract

Background: The primary aim of this study was to evaluate the diagnostic accuracy of ultrasound (US) in the study of superficial lymph nodes during the follow-up of patients surgically treated for skin tumours. The secondary objective was to compare positive cytological results with histological reports.

Patients and methods: From 2004 to 2011, 480 patients (male/female: 285/195; median age 57 years; prevalent skin tumour: melanoma) underwent US-guided fine-needle aspiration biopsy (FNAB) of suspicious recurrent lymph nodes. An expert radiologist first performed US testing of the lymph nodes, expressing either a negative or positive outcome of the test. Subsequently, US-guided FNAB was performed. FNAB positive patients were subjected to lymphadenectomy; the patients who tested negative underwent the follow-up.

Results: The size of lymph nodes was ≤ 2 cm in 90% of cases. Out of the 336 (70%) US "positive" patients, 231 (68.8%) were FNAB positives. Out of the 144 (30%) US "negatives", 132 (91.7%) were FNAB negatives. The sensitivity and specificity of the US were 95% and 55.7%, respectively; the negative predictive value was 91.7% and the positive predictive value was 68.8%. Definitive histological results confirmed FNAB positivity in 97.5% of lymphadenectomies.

Conclusions: US is a sensitive method in the evaluation of superficial lymph nodes during the follow-up of patients with skin tumours. High positive predictive value of cytology was confirmed.

Keywords: fine needle aspiration biopsy, follow-up; skin tumours; ultrasound.

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Figures

FIGURE 1.
FIGURE 1.
Flow-chart describing lymph-nodes analysed by ultrasound and FNAB cytology. LFN = lymph-nodes investigated; US− = ultrasound negative for lymph-node metastasis; US+ = ultrasound positive for lymph-node metastasis; FNAB = fine-needle aspiration biopsy; FNAB− = FNAB negative for lymph-node metastasis; FNAB+ = FNAB positive for lymph-node metastasis

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