Match each clinical finding regarding the diagnostic evaluation of a newly discovered thyroid nodule with the most appropriate guideline-indicated next step in management.
- Initial evaluation of a palpable 2.5 cm thyroid nodule reveals a markedly suppressed serum thyroid-stimulating hormone (TSH) level.Perform thyroid radionuclide scintigraphy
- Neck ultrasound demonstrates a 1.5 cm solid thyroid nodule with microcalcifications in a patient with a normal serum TSH level.Perform ultrasound-guided fine-needle aspiration (FNA) biopsy
- Cytological analysis of a thyroid nodule biopsy returns as atypia of undetermined significance (Bethesda Category III).Perform molecular marker testing or repeat fine-needle aspiration
- Fine-needle aspiration of a dominant thyroid nodule shows benign follicular cells and abundant colloid (Bethesda Category II).Schedule clinical observation with follow-up ultrasound in 12 to 24 months
Cevap
The correct pairings align each clinical scenario with its position in the thyroid nodule diagnostic algorithm: suppressed TSH requires radionuclide scintigraphy; suspicious ultrasound with normal TSH requires FNA biopsy; Bethesda III cytology requires molecular testing or repeat FNA; and Bethesda II cytology requires observation.
The correct pairings successfully navigate the thyroid nodule diagnostic algorithm. A subnormal TSH requires a radionuclide scan to rule out a hyperfunctioning nodule. A normal TSH with suspicious ultrasound features necessitates an FNA biopsy. Based on FNA results, Bethesda III (atypia) requires molecular testing or repeat biopsy to clarify malignancy risk, whereas Bethesda II (benign) requires only routine observation.
Adım Adım Çözüm
Anahtar Kavram
The diagnostic algorithm for thyroid nodules relies first on TSH measurement, followed by ultrasound and FNA for non-hyperfunctioning nodules meeting size/risk criteria, with subsequent steps guided by Bethesda cytology classifications.
Tahmini Süre:1m 30s