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Updated: Dec 8, 2025

Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
Published on: November 10, 2014
[A rare case of renal ectopic thyroid tissue]
David Kajaia1, Benjamin Hager1, Stefan Kliebisch1
1Sozialstiftung Bamberg, Klinik für Urologie, Kinderurologie und roboterassistierte minimalinvasive Urologie, Bamberg.
Abstract:
We present a rare case of ectopic thyroid tissue found during robotic nephrectomy of a kidney with a suspected malignant tumour. Such cases of ectopic thyroid tissue are extremely rare in the literature. If ectopic thyroid tissue occurs, it is usually found in the neck region or in the upper mediastinum. Clinical symptoms depend on size, localisation and hormonal function of the ectopic tissue. Surgical resection remains the treatment of choice; in individual cases, conservative treatment can be an option. This case report aims to emphasise that renal tumours of unknown origin might be paraneoplastic or ectopic tissue of other organs.
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