Positron emission tomography detected thyroid incidentaloma

Area of Science:

• Endocrinology
• Oncology
• Radiology

Background:

• Thyroid incidentalomas are nodules discovered incidentally during imaging for other conditions.
• Positron emission tomography/computed tomography (PET/CT) is increasingly used for cancer staging and detection.
• The optimal management strategy for incidentally discovered thyroid lesions remains a subject of ongoing research.

Observation:

• A 48-year-old woman presented with a thyroid lesion incidentally detected on PET/CT performed for a suspicious lung lesion.
• Clinical examination revealed a 3 cm thyroid nodule; fine needle aspiration yielded indeterminate results.
• Surgical intervention (left hemithyroidectomy) was performed for diagnosis and management.

Findings:

• Histopathological examination confirmed a benign thyroid adenoma.
• An incidental micropapillary carcinoma, a type of thyroid cancer, was discovered within the adenoma.
• This case highlights the potential for discovering unexpected malignancies within benign-appearing thyroid nodules.

Implications:

• The incidental discovery of thyroid cancer underscores the importance of thorough evaluation of thyroid incidentalomas.
• Current literature provides limited definitive guidance, necessitating a personalized approach to patient management.
• Further research is needed to establish standardized protocols for the workup and treatment of thyroid incidentalomas.