title: Suspicious sonographic and cytological findings in patients with subacute thyroiditis: Two case reports.
abstract: We here report on two cases of suspicious cytological findings upon ultrasound (US)-guided fine-needle aspiration (US-FNA) in patients with subacute thyroiditis (SAT). A 46-year-old woman who underwent US-FNA for a suspicious thyroid nodule in the right lobe at a local clinic was referred to our hospital for surgical treatment. Based on the cytology results, total thyroidectomy was performed. The histopathology findings confirmed the presence of SAT in the right lobe and absence of thyroid malignancy. A 40-year-old woman with a thyroid nodule in the left lobe with suspicious cytological findings upon US-FNA was referred to our hospital for surgical treatment. However, neck US revealed typical sonographic findings of SAT. On follow-up US 3 months later, near complete disappearance of the typical sonographic findings of SAT was observed, while a hypoechoic solid thyroid nodule in the left upper lobe was clearly visualized. Accordingly, US-FNA was performed for the hypoechoic thyroid nodule. Papillary thyroid carcinoma was suspected on the basis of the cytology findings; histopathologically, SAT was confirmed in both thyroid lobes and a papillary thyroid carcinoma was confirmed in the left lobe.
authors.affiliation: Department of General Surgery, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea, 614-734.
authors.forename: Ha Kyoung
authors.initials: HK
authors.lastname: Park
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Kim
authors.forename: Yoo Jin
authors.initials: YJ
authors.lastname: Lee
authors.forename: Tae Kwun
authors.initials: TK
authors.lastname: Ha
authors.forename: Do Hun
authors.initials: DH
authors.lastname: Kim
authors.forename: Sang Kyun
authors.initials: SK
authors.lastname: Bae
authors.forename: Soo Jin
authors.initials: SJ
authors.lastname: Jung
mesh_terms: D000328:Adult; D044963:Biopsy, Fine-Needle; D002277:Carcinoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002291:Carcinoma, Papillary; D005260:Female; D006801:Humans; D008875:Middle Aged; D000077273:Thyroid Cancer, Papillary; D013961:Thyroid Gland / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D016606:Thyroid Nodule / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D013965:Thyroidectomy; D013968:Thyroiditis, Subacute / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography
keywords: cytology; malignancy; subacute thyroiditis; thyroid; ultrasound