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PubMed2005

An intra-thyroid thyroglossal duct cyst.

Thyroglossal duct cysts can be found in several different locations, although intra-thyroid presentations are rare. We present the case of an 11-year-old patient with a visible neck mass on the right thyroid lobe. On sonogram, it was consistent with a unilocular cyst measuring 2 centimeters in diameter. The cyst did not take up the radioisotope during a gammagram. Fine needle aspiration cytology suggested a diagnosis of thyroglossal duct cyst. At surgery, we found that there were no lesion-dependent thyroglossal tracts; we therefore performed a simple enucleation of the cyst, sparing the rest of the gland. The pathologic examination confirmed that it was an intra-thyroid thyroglossal duct cyst. After 8 months of follow-up, the patient has remained without complications of any kind or recurrence. Only four prior cases of intra-thyroid thyroglossal cysts have been described in the pediatric population. Half of them presented with a typical thyroglossal tract crossing the hyoid and the other half presented an isolated cyst. It is highly unlikely that a cold, cystic, thyroid mass in a child is a thyroglossal duct cyst. Diagnosis is made on the basis of fine needle aspiration cytology and the lesion is treated surgically. A thyroglossal tract must be methodically sought out during intervention, although they frequently do not exist.

Child↗
PubMed1993

Carcinoma of the thyroglossal duct: case reports and a literature review.

Carcinoma of the thyroglossal tract is a rare entity. Three patients with thyroglossal cyst carcinomas are presented and the features of the disease, as reported in the literature, are discussed. Epidemiologically, females are more often affected than males and the average age of the patients described lies in the fourth decade. The aetiology is obscure, although previous irradiation is a possible risk factor. Carcinoma of the thyroglossal tract should also be suspected in patients with irregular masses. Pre-operative evaluation may include a thyroid scan and fine needle aspiration cytological examination of the cyst fluid. These tests, if positive, may alter the basic approach of the Sistrunk procedure to encompass thyroidectomy or wider margins. Neck dissection is preferred for cervical nodal disease. Adjuvant radiotherapy or radio-iodine is added if indicated by the histology, and the patient receives suppressive thyroxine therapy thereafter.

Adult↗
PubMed2000

Investigation and treatment of thyroglossal cysts in children.

Thyroglossal cysts are the commonest midline neck masses in children. To evaluate current practice questionnaires were sent to all ear, nose and throat (ENT) and paediatric surgeons in the UK and 72% responded. The commonest investigation requested was an ultrasound scan (54%) and the commonest operation was a variant of Sistrunk's procedure (78%). Paediatric surgeons did fewer investigations than ENT surgeons and tended to excise more of the thyroglossal tract. Review of the published work suggests that ultrasound scanning and Sistrunk's procedure are the best management policy. The scan can avoid inadvertent excision of an ectopic thyroid gland. Extensive thyroglossal tract excisions give lower recurrence rates.

Child↗
PubMed1998

Intrathyroid cysts of thyroglossal duct origin.

Thyroglossal duct cysts develop from a persistent portion of the thyroglossal tract and have been described as occurring anywhere from the base of the tongue to the manubrium. We present two patients who presented with a cystic thyroid nodule due to an intrathyroid thyroglossal duct cyst. A fine-needle aspiration biopsy was performed, which revealed benign squamous cells. Upon exploration, the first patient was found to have a 2-cm cyst within the thyroid isthmus, and in the second patient, a 1-cm cyst was found in the right thyroid lobe. Pathologic analysis revealed the cyst to be lined by a squamous epithelium consistent with a thyroglossal duct cyst. The lesions were completely surrounded by normal thyroid tissue. There was no evidence of a remnant of the thyroglossal duct extending from the thyroid in the region of the cyst. Both patients were treated by thyroid lobectomy and isthmusectomy and have remained without evidence of recurrence. Intrathyroid thyroglossal duct cysts should be included in the differential of patients with cystic thyroid lesions. Fine-needle aspiration revealing benign squamous cells is usually diagnostic and may detect an occult carcinoma arising within the cyst. Surgical resection is curative and should include a Sistrunk procedure if a thyroglossal duct tract is present.

Aged↗
PubMed1991

Familial occurrence of thyroglossal duct cyst.

Persistence and dilation of the embryologic thyroglossal tract gives rise to the condition of thyroglossal duct cyst. Although these cysts have an embryologic origin, there is rarely a history of inheritance. A search of the literature shows only two family reports, which includes a total of nine patients. We report on a third family with thyroglossal duct cyst in two members. The patients were female siblings aged 2 and 6 years, both of whom underwent successful surgical excision of their thyroglossal duct cysts by modified Sistrunk's technique.

Child↗
PubMed2000

Colloid cyst in ectopic thyroid gland.

A five year old girl presented with a mid-line neck swelling. At operation, a multiloculated cyst was excised with a portion of hyoid bone and a suprahyoid gelatinous tract extending into the base of the tongue. Histology revealed a benign colloid cyst with associated thyroid tissue. Post-operative investigations indicated severe hypothyroidism. The cystic nature of the lesion was misleading at operation and pre-operative thyroid ultrasonography (US) is recommended for all patients with suspected thyroglossal tract cysts (TGC).

Child, Preschool↗