Ultrasound-guided core needle biopsy of cervical lymph nodes in the diagnosis of toxoplasmosis.

BACKGROUND: Our study investigates whether the histopathological features of toxoplasmic lymphadenitis (TL), specifically noncaseating microgranuloma and follicular hyperplasia, can be obtained by sonographic-guided core needle biopsy (CNB) of cervical lymph nodes.

METHODS: Thirty-two patients seen from June 2014 to March 2015 were positive for toxoplasma immunoglobulin M antibody. Among those patients, 21 underwent CNB of a cervical lymph node and were enrolled in this study. The pathologic findings were reviewed.

RESULTS: Twenty-nine lymph nodes in 21 patients were sampled. Eighteen of the 21 (86%) patients had a microgranuloma without caseating necrosis or giant cells, and all 21 (100%) patients had follicular hyperplasia.

CONCLUSIONS: The histologic findings of TL were detected by sonographic-guided CNB, which can be used as part of the first line of investigation in patients with unexplained cervical adenopathy. © 2016 Wiley Periodicals, Inc. J Clin Ultrasound 45:192-196, 2017.