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PubMed1989

Sistrunk revisited: a 10-year review of revision thyroglossal duct surgery at Toronto's Hospital for Sick Children.

The definitive surgical management of thyroglossal duct cysts (TGDC) was elucidated by Sistrunk in 1920. However, the procedure is often poorly performed. We reviewed the charts of 143 patients managed for TGDC at the Hospital for Sick Children. Toronto, between 1978-1988. These patients underwent 214 surgical procedures at HSC and elsewhere for cure. One hundred and five patients needed only one procedure. Thirty-eight patients had recurrent disease. These needed 109 procedures for cure. Inadequate surgery was the direct cause of recurrence. Areas of surgical failure included misdiagnosis, inadequate hyoid bone resection and persistent infra or suprahyoid tract remnants. Representative case samples are outlined with clinical, surgical and pathologic correlation. We recommend performing the complete, classic Sistrunk procedure for all cases of TGDC.

Abscess↗
PubMed1998

Thyroglossal duct remnant penetrating the hyoid bone--a case report.

Examination of the thyroglossal duct (TGD) in a senile patient with a thyroglossal duct cyst (TGDC), as well as in children, is very valuable in understanding the pathology of TGDC. The precise anatomy of TGDC was studied in a specimen obtained from a 59-year-old man using three-dimensional reconstruction. The authors found the TGD penetrated the hyoid bone. This pathological evidence has not previously appeared in the literature. Penetration of the hyoid bone by the TGD is the result of a forward growth of the hyoid bone after development of a TGD, which had appeared ventral to the hyoid bone. In this gradual forward growth, the hyoid bone had first started to press against, before eventually engulfing, the TGD.

Bone Diseases↗
PubMed2003

Risk factors for thyroglossal duct remnants after Sistrunk procedure in a pediatric population.

To evaluate recurrence after surgery for thyroglossal duct cyst (TDC) we performed a retrospective chart review. Seventy four patients between 0.5 and 8.5 years of age presenting with a midline neck cyst underwent a Sistrunk procedure for a preoperative diagnosis of TDC. Fifty-seven had histologically confirmed TDC (mean age of the population: 4+/-1.5 years, mean follow-up: 6 years and 8 months). Recurrence occurred in 15% of the cases of histologically confirmed TDC. Four individual risk factors have been identified: number of infection before surgery [more than 2 episodes (P<0.05)]; preliminary surgical procedure (P<0.05); age [less than 2 years (P<0.05)] and multicystic lesion on histopathology (P<0.01). The two first factors being correlated, the risk of relapse might be lowered by a wide excision performed before any infection in children over 2 years.

Child, Preschool↗
PubMed2002

Thyroid developmental anomalies in first degree relatives of children with congenital hypothyroidism.

Congenital hypothyroidism (CH) is most frequently caused by thyroid developmental abnormalities and it has recently been seen to have a familial component. The aim of this study was to investigate whether thyroid developmental abnormalities exist in first degree relatives of CH children with thyroid dysgenesis, an anomaly which, when present, is sometimes asymptomatic. Thyroid ultrasonography and function were evaluated among first degree relatives (n = 241) of 84 isolated CH children with thyroid dysgenesis. The results were compared with those of an unselected control population (n = 217). In 19 individuals (7.9% of cases) belonging to 18 families (21.4%), 21 cases of thyroid developmental abnormalities were detected, whereas only 2 subjects (0.9%) were affected in controls (P < 0.001). These 21 thyroid developmental abnormalities included thyroglossal duct cysts (n = 14), additional thyroid tissue with presence of a pyramidal lobe (n = 3), thyroid hemiagenesis (n = 3), and ectopic thyroid tissue (n = 1). All of these subjects showed normal thyroid function and belonged to nuclear families of CH children with athyreosis (n = 8), ectopic thyroid tissue (n = 9), or hemiagenesis (n = 1). A segregation analysis led to the conclusion that thyroid developmental abnormalities are compatible with an autosomal dominant mode of inheritance with a low penetrance estimated at 21% for asymptomatic thyroid developmental abnormalities and a probability of less than 7% of developing CH for a carrier of the susceptibility allele. In conclusion, these observations support the hypothesis of a common genetic component of the disorder with heterogeneous phenotypes.

Adult↗
PubMed1998

Thyroglossal duct carcinoma: presentation and management, including eight cases reports.

Although thyroglossal duct cysts represent a common developmental abnormality of the thyroid gland, malignant transformation is rare and occurs in only 1%. This article describes eight patients who were referred to the Royal Marsden Hospital between 1956 and 1991. There were five males and three females, aged from 14 to 71 years (mean 44.6). There were seven papillary carcinomas and one follicular carcinoma. Patients were followed for between 6 and 41 years (mean 16.5). Management comprised: surgical excision only in four patients; surgical excision plus thyroidectomy followed by radioiodine in three; and radioiodine following only biopsy in one patient with lingual thyroid carcinoma. Multifocal carcinoma of the thyroid was found in one patient and a single focus of carcinoma in the thyroid gland in another; lymph node metastases were found in only one patient. There was no history of previous exposure to ionizing radiation.

Adenocarcinoma, Follicular↗
PubMed1989

Unusual patterns of congenital neck masses in children.

Congenital neck masses--thyroglossal duct cysts (TDC) and branchial cleft cysts (BCC)--are frequently encountered in any pediatric surgical practice. While their diagnosis is usually straightforward, unusual or combined presentations may occur. We report eleven cases of unusual patterns of congenital neck masses in children. Two patients underwent resection of a BCC with a sinus tract extending through the carotid bifurcation. Both patients subsequently presented with a new mass near the previous scar, which was thought to be a recurrence but was found at surgery to have TDCs with sinus tracts extending through the hyoid bone. In one patient, a lateral neck mass (presumed to be a BCC) was found at surgery to be a TDC. In all three cases the diagnoses were confirmed histologically. Eight patients presented with a solitary thyroid nodule. Six of these had intrathyroid branchial cleft remnants, and two had intrathyroid TDCs. The diagnosis became apparent at operation in six patients, while in two it was made by the pathologist after hemithyroidectomy. Ages at presentation ranged from 16 months to 14 years. The embryology of these neck structures is closely related. It should not come as a surprise that errors in their development may occur, at times paralleling the occurrence of intrathyroid location of parathyroid glands. The possibility of an embryologic rest in the neck should therefore be kept in mind with all clinically evident neck masses. TDCs and BCCs may coexist in the same patient. The histologic differentiation may be difficult in the presence of inflammation, but differences in structure are often characteristic.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed2004

Thyroglossal duct infections and surgical outcomes.

PURPOSE: Thyroglossal duct cysts (TGDC) are the most common head and neck congenital anomalies in children and often present as infected neck masses. The authors reviewed their experience with TGDC to determine if preoperative infection was related to postoperative complications, including recurrence and postoperative infection. METHODS: The medical records of 99 patients undergoing excision of TGDC from January 1991 to July 2002 were reviewed. Factors thought to be associated with recurrence (age, history of infection, drainage, abscess, and operative procedure) were analyzed. RESULTS: Ninety-nine patients made up the study group. The mean age at operation was 5.0 years (range, 6 months to 16 years) with a male to female ratio of 1.6:1. TGDC recurred in 12.1% (12 of 99) of these patients. There was no gender difference for those with and without recurrence. The presence of an abscess or cellulitis preoperatively (22 of 99 patients) did not correlate with recurrence (NS). In addition, postoperative infection occurred in 13 of 99 patients and also was independent of preoperative infection. However, postoperative infection clearly was associated with an increased risk of TGDC recurrence. Seven of 87 patients without recurrence had a postoperative infection, whereas 6 of 12 of those who had a recurrence had a postoperative infection (P <.001). The mean follow-up was 3.7 years and was comparable for the 2 groups (recurrence v. resolution). Twelve patients successfully underwent a second procedure for recurrence. CONCLUSIONS: In this large series of TGDC, preoperative infection occurred in approximately 1 of 5 patients and was not predictive of recurrence. Although postoperative infection did not correlate with the presence of preoperative infection, it was clearly associated with a statistically significant incidence of recurrent disease.

Adolescent↗
PubMed1994

Carcinoma arising in thyroglossal remnants.

Three patients with a papillary carcinoma arising in a thyroglossal duct cyst are presented and the literature is reviewed. This rare malignancy is seen mostly in women between the ages of 20 and 50 years. The distribution of carcinoma subtypes differs from that of thyroid carcinomas and thyroglossal duct carcinoma is recognized as a primary tumour. The diagnosis is seldom made pre-operatively though especially in older patients with midline swellings in the neck the diagnosis should be considered. Sistrunk's operation is the treatment of choice. In this operation the cyst, the middle part of the hyoid bone and the thyroglossal duct are removed in continuity.

Adult↗
PubMed1988

Tumours of the head and neck in children. A clinico-pathological analysis of 1,007 cases.

Tumours of the head and neck in children are uncommon, representing only 2-3% of all head and neck tumours. During the twenty year period 1964-1983, 12,876 childhood tumours were submitted for pathological diagnosis. Of these 1,007 (7.8%) were in the head and neck region, and it is this group that has been analysed. 30.6% (308 cases) were malignant neoplasms, 27.8% (280 cases) were benign neoplasms, 24.2% (244 cases) presented as tumour-like conditions and 17.4 (175 cases) were dysplasias arising from embryonal remnants. The overall sex ratio was 1.5:1 in favour of males. Lymphomas accounted for 15.9% overall (52.3% of the malignant neoplasms). Of benign tumours, haemangiomas were the most frequent (38.5%) and of the tumour-like conditions, dermoid and epidermoid cysts accounted for 36.1%. Of the embryonal remnant dysplasias, thyroglossal duct cysts accounted for 71.4%.

Adolescent↗
PubMed1979

Radiologic findings in persistent thyroglossal tract fistulas.

Recurrent cysts and persistent fistulas are frequent complications of thyroglossal cystectomy if the excision is not extended through the hyoid bone to the foramen cecum. In 3 cases of persistent thyroglossal tracts, fistulography was performed and found to be valuable in demonstrating the extent of the tract. Surgical excision was completed and specimens were examined histologically. The retained upper portion of the thyroglossal tract was the established cause of the recurrent symptoms; removal of the entire tract up to the foramen cecum was confirmed as the recommended procedure.

Adult↗