1. Demographic and histological subtypes of Hurthle cell tumours of the thyroid in a South African setting
- Author
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Victor Malith, Thifheli Luvhengo, Ifongo Bombil, and N Harran
- Subjects
Male ,Databases, Factual ,medicine.medical_treatment ,Cell ,Gastroenterology ,Cohort Studies ,South Africa ,0302 clinical medicine ,Adenoma, Oxyphilic ,Thyroid Nodule ,Hurthle cell neoplasm, Hurthle cell carcinoma, FNA, tumour size ,Incidence ,Thyroid ,Middle Aged ,Prognosis ,Immunohistochemistry ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Thyroidectomy ,Hurthle cell neoplasm ,Female ,medicine.symptom ,Adult ,medicine.medical_specialty ,Biopsy, Fine-Needle ,030209 endocrinology & metabolism ,Adenocarcinoma ,Malignancy ,Risk Assessment ,Diagnosis, Differential ,tumour size ,03 medical and health sciences ,Age Distribution ,Predictive Value of Tests ,Internal medicine ,medicine ,Humans ,Thyroid Neoplasms ,Sex Distribution ,Developing Countries ,Aged ,Neoplasm Staging ,Retrospective Studies ,business.industry ,Histology ,Nodule (medicine) ,medicine.disease ,FNA ,Tumour size ,Surgery ,Histopathology ,Hurthle cell carcinoma ,business - Abstract
Background: Report of Hurthle cells following fine needle aspiration cytology from a thyroid nodule raises possibility of Hurthle cell carcinoma (HCC), which is a distinct entity and accounts for 3–10% of thyroid malignancies.Aim: To determine if there are demographic and histopathological features which may be used to differentiate HCC from Hurthle cell adenoma (HCA).Methods: Histopathology records of patients who had thyroidectomy from January 2001 to October 2015 were reviewed. Data retrieved included indications for thyroidectomy, patients’ demographics, histology and preoperative FNAC results.Results: At total of 2641 records were reviewed of which 25.6% (676/2641) were for neoplasms. 15.8% (107/676) of the neoplasms were Hurthle cell neoplasms (HCNs) and 25.2% (27/107) of HCNs were HCCs. 77.2% (71/92) of HCAs and 77.8% (21/27) of HCCs were from female patients. Preoperative FNAC results were available for 54.2% (58/107) and were suspicious of HCN in 12.1% (7/58). Average tumour size for HCCs and HCAs was 4.9 +/- 2.7 cm and 3.5 +/- 2.0 cm, respectively. The difference was statistically significant with a p-value of 0.016. The risk of malignancy increased from 11.1% in HCNs less than 1 cm to 53.8% for tumours which were greater than 4 cm in diameter.Conclusion: HCNs are more common in females. The likelihood of HCC rises as the size of the HCN increases. Malignancy rate exceeds 50% for HCNs which are greater than 4 cm in diameter.Key words: Hurthle cell neoplasm, Hurthle cell carcinoma, FNA, tumour size
- Published
- 2018
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