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At least 415 records · Page 23Linked to original sources
PubMed2006

[Unusual non-neoplastic lesions in the "surgical pathology" of the thyroid].

This review aims to describe and assist in the categorization of most of the unusual non-neoplastic conditions, encountered in the surgical pathology of the thyroid. The conditions included are: normal intrathyroidal vestigial tissues/structures (i.e. rests of the ultimobranchial body and thyroglossal duct) and their relevant pathological derivatives (ultimobranchial body cyst, intrathyroidal lymphoepithelial cyst, thyroglossal duct cyst); mature intrathyroidal heterologous tissues/organs of either metaplastic or heterotopic origin (adipose tissue, striated skeletal muscle, cartilage, parathyroid glands, thymus, salivary gland tissue) and their relevant pseudotumoural lesions; varieties of metaplastic and non-metaplastic morphologic changes of the thyroid follicular epithelium (oncocytic, clear cell/signet ring cell, darkly pigmented cell, mucinous (myxoid), squamous, spindle cell); amyloid goiter; some reactive and/or degenerative cytologic and nuclear atypicalities (nuclear pseudoclearing and cell pleomorphism) as well as some hyperplastic or peculiar growth patterns (capsular pseudoinvasion; vascular invasion; papillary carcinoma-like and paraganglioma-like patterns) of benign conditions mimicking neoplasia; and finally. some pseudotumoural lesions of the stroma (pseudoangiosarcomatous vascular proliferation, and post-fine-needle aspiration spindle cell nodule). The pathogenetic mechanism, the morphologic interpretation, and the differential diagnosis of each of the above-listed conditions are discussed and pertinent illustrations for many of them are also provided. Lesions of thyroid tissue situated outside of the gland itself are not discussed.

Adipose Tissue↗
PubMed1995

Study of benign superficial cysts by fine needle aspiration cytology.

Fine needle aspiration cytology of 213 cases of different cystic lesions from various regions of body and different superficial organs was analysed in an attempt to present the experience of the authors in the diagnosis of such lesions. The predominant lesion diagnosed by fine needle aspiration cytology was adnexal cyst/sebaceous cyst (41 cases) followed by vascular hamartoma (40 cases) and thyroglossal cyst (9 cases). One hundred fifty-eight (74.2%) out 213 cases were confirmed histopathologically. There was false negative diagnosis in 14 cases (6.6%). The remaining 41 (19.2%) cases did not turn up for further treatment. The fallacies that have been recorded in the diagnosis of thyroid cysts, salivary gland cysts and breast cysts in respect of papillary cystic thyroid carcinoma, muco-epidermoid carcinoma of salivary gland and intraductal carcinoma with fibrocystic disease of breast respectively have been highlighted in the present study.

Biopsy, Needle↗
PubMed1997

Paediatric neck masses--a diagnostic dilemma.

Three hundred and sixty children who had a head and neck mass excised during 1987 to 1992 at the Royal Hospital for Sick Children, Glasgow were studied. There were 210 males and 150 females with a mean age of 60.7 months (0.5 to 198 months). Pilomatrixomata/sebaceous cysts (34 per cent), thyroglossal cysts (13 per cent), branchial remnants (nine per cent) and dermoids (nine per cent) accounted for almost two-thirds of the 264 non-lymphadenomatous benign lesions excised. Ninety-three lymphadenopathy masses consisted of 60 with reactive hyperplasia, 21 with Mycobacterium infection and 12 lymphomas. There were three solid malignant tumours, two were rhabdomyosarcomata and one disseminated round cell tumour. The correlation between clinical diagnosis and histopathology of benign non-lymph node masses and solid tumours was 90 per cent and 100 per cent respectively, in benign lymph nodes, 66 per cent, but was poor in differentiating lymph node content. The mean time from presentation of a swelling to its excision was almost a year and the mean in-patient stay for excision of a mass was almost five days. The role of fine needle aspiration cytology (FNAC) in arriving at a diagnosis and reducing patient morbidity is discussed.

Adolescent↗
PubMed1976

Carcinoma arising in thyroglossal duct remnants.

Papillary adenocarcinoma arising in a thyroglossal cyst is described in a 38-year-old man to make a total of 83 cases in the literature. Most cases appear to be benign thyroglossal duct cysts. The malignant nature of the lesion was recognized only after the permanent pathology sections were reviewed. Paillary carcinoma was the most common type of carcinoma arising in thyroglossal duct remnants. Local resection by the Sistrunk method is the standard treatment when the malignancy has not extended beyond the confines of the cyst. The differentiation between a carcinoma arising in a thyroglossal duct remnant and a metastatic papillary carcinoma from an occult primary in the main thyroid gland is discussed.

Adenocarcinoma, Papillary↗
PubMedDate not supplied

Fine-needle aspiration of head and neck masses in children.

PURPOSE: Head and neck masses in children are common. Suspicious or persistent masses are referred to the otolaryngologist who is faced with the dilemma of deciding which ones require surgical excision. Fine-needle aspiration (FNA) in adults helps distinguish lesions requiring excision from those that do not. Few reports exist of its use in children PATIENTS AND METHODS: Between January 1991 and December 1994, 67 FNAs were performed on children, 29 of which (43%) were for head and neck masses. Based on the FNA findings, 16 patients underwent surgery. RESULTS: In 13 patients, the final pathology was consistent with the FNA findings: granulomatous diseases (3), branchial cysts (3), acute/chronic lymphadenitis (3), thyroglossal cyst, hemangioma, Hodgkin's lymphoma, and Castleman's disease (one each). There was one misdiagnosis, no false positives, and two nondiagnostic specimens. Based on the results of FNA, surgery was not performed in the remaining 10 patients. The cytology was: cervical lymphadenopathy (7), abscess formation (1), lymphangioma (1), and leukemia (1). CONCLUSION: We conclude that FNA in an extremely useful tool in the management of head and neck masses in children. It is very well-tolerated by children, and we did not encounter any complications.

Adolescent↗
PubMed1991

Radiographic manifestations of congenital anomalies affecting the airway.

Congenital anomalies of the airway are generally uncommon, but a vast array of possibilities exists. Some present life-threatening emergencies at birth, and others go undiagnosed for years. Clinical symptoms are often nonspecific, and radiographic evaluation is frequently requested to localize and characterize the lesion before endoscopy, surgery, or medical management. The most common intrinsic congenital anomalies causing airway compromise in infants include choanal atresia, mandibular hypoplasia, laryngomalacia, vocal cord paralysis, and congenital subglottic stenosis. The radiologist must be on the alert for unsuspected additional anomalies involving the airway, lungs, and esophagus, which occur with relative frequency. Numerous extrinsic congenital masses of the head, neck, and mediastinum may compromise the airway. Hemangiomas, lymphangiomas, and teratomas are more likely to be noted at birth, whereas branchial cleft cysts, thyroglossal duct anomalies, and dermoid cysts frequently present later. Mass location and radiographic characteristics usually allow accurate preoperative diagnosis. Intracranial involvement by nasal or nasopharyngeal masses, intrathoracic involvement by lower neck mass, and intraspinal involvement by posterior neck mass must always be sought for radiographically. Persistence of respiratory symptoms after removal of such masses is not uncommon because tracheal deformity and laxity may take months or years to resolve. Recent advances in cine CT and MR imaging promise to improve imaging of the airway in general and in the pediatric population in particular. Significant limitations in imaging of the pediatric larynx remain. As a result, endoscopy continues to be the primary diagnostic tool for airway anomalies of this region.

Head and Neck Neoplasms↗
PubMed1977

The applied anatomy of thyroglossal tract remnants.

Recurrences after surgery for thyroglossal cysts and fistulas were common until, in 1920, Sistrunk described his technique for removing the whole thyroglossal tract. Since that time there has been considerable argument concerning the exact path taken by the tract particularly in relation to the hyoid bone. In an attempt to elucidate this problem, studies have been made of embryos at varying stages of development, of serially step-sectioned adult larynges and of surgical specimens. These studies suggest that the thyroglossal tract occupies a constant and embryologically predictable position in relation to the hyoid bone and they support the rationale of Sistrunk's procedure.

Female↗
PubMed2002

Auto-immune thyroiditis presenting as a thyroglossal tract swelling.

Both thyroglossal cysts and aberrant thyroid tissue may present as a mid-line neck swelling. We report a case of autoimmune thyroiditis presenting as a thyroglossal swelling in a middle-aged woman. This very rare finding is discussed with reference to the optimal management of thyroglossal tract swellings.

Diagnosis, Differential↗
PubMed2000

[Personal experience in the treatment of medial cervical cysts in children].

Twenty-five patients with thyreoglossal cysts were treated during a 7 years long period. Most of the cysts (in 64 of patients) were typically located between the hyoid bone and the thyreoid gland. The complete Sistrunk's operation was performed in 40% of the patients and 48% patients underwent an extirpation of thyroglossal cyst with a resection of the hyoid bone body. Three of the patients (12%) suffered a relapse. In one of the patients, this was due to the lateral cyst swapping and in two patients an incomplete extirpation of the ductus thyreoglossus remnant happened. In another patient, an iatrogenic hypothyreossis occurred. To avoid relapse, authors recommend to resect at least 10 mm of the hyoid body and 5 mm of the ductus thyreoglossus remnant behind the hyoid bone.

Adolescent↗