Presentation
Incidental thyroid abnormality seen on CT. Ultrasound suggested.
Patient Data
Lobulated irregular hypoechoic thyroid lesion with multiple high signal echos within in keeping with microcalcifications. The lesion is wider than tall. No cystic component identified.
Different patient for comparison
A different case this time: confirmed papillary carcinoma. Note the halo is gone. The lesion does not have a clear lucent halo. The lesion is tall as broad.
Case Discussion
This image shows all the hallmarks suggestive of a malignant thyroid lesion:
1. The lucent "halo" around the lesion is gone. The lesion infiltrates the surrounding thyroid tissue. Benign lesions typically have a sonolucent well defined "halo" which is crearly defined
2. Visible microcalcifications
3. The lesion is hypoechoic compared to the normal parenchyma
4. the lesion is as tall as broad. Benign lesions are typically broader than tall.
This was a confirmed papillary carcinoma on FNA.