Massive lateral neck mass: aberrant ectopic thyroid malignancy

Lateral aberrant ectopic thyroid is very rare, comprising only 1%–3% of all the ectopic thyroid tissue. Clinically, these lesions are mistaken for lymph node swelling or metastatic tumour. Primary carcinoma in lateral aberrant ectopic thyroid with normal active native thyroid is very uncommon. We re...

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Bibliographic Details
Published in:BMJ case reports 2021-05, Vol.14 (5), p.e241451
Main Authors: Singh, Vartika, Srinivas, Teerthanath, Bhat, Shubha, Goel, Shreya
Format: Article
Language:English
Subjects:
Carcinoma, Papillary - diagnostic imaging
Carcinoma, Papillary - surgery
Case Report
Case reports
Cysts
Histology
Humans
Iodine Radioisotopes
Lymphatic system
Lymphoma
Male
Metastasis
Middle Aged
Morphology
Neuroendocrine tumors
Thyroid cancer
Thyroid Dysgenesis - diagnostic imaging
Thyroid Dysgenesis - surgery
Thyroid Neoplasms - diagnostic imaging
Thyroid Neoplasms - surgery
Thyroidectomy
Veins & arteries
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Summary:Lateral aberrant ectopic thyroid is very rare, comprising only 1%–3% of all the ectopic thyroid tissue. Clinically, these lesions are mistaken for lymph node swelling or metastatic tumour. Primary carcinoma in lateral aberrant ectopic thyroid with normal active native thyroid is very uncommon. We report a case of papillary carcinoma in lateral aberrant ectopic thyroid tissue, with a completely normal native thyroid gland in a 53-year-old man, who presented with a massive swelling in the lateral aspect of the neck clinically and radiologically diagnosed as a malignant soft tissue tumour with differential diagnosis of malignant lymphoma. Fine needle aspiration cytology revealed metastatic papillary carcinoma. In toto excision of the soft tissue mass along with subtotal thyroidectomy was performed. Histology of the mass revealed papillary carcinoma of lateral aberrant ectopic thyroid, while the thyroid gland did not show evidence of malignancy. The postsurgical period was uneventful, and the patient underwent radioiodine ablation.
ISSN:1757-790X
1757-790X
DOI:10.1136/bcr-2020-241451