thyroid lesions – evaluation with sonography
DESCRIPTION
Ultrasound diagnosis of thyroid gland lesionsTRANSCRIPT
Thyroid lesions – Evaluation with Sonography
Presented BY
DR Laith Al hialy
thyroid disorders – presentation
• thyroid gland enlargement (Goiter )
• Palpable nodule• Hyperthyroidism • Hypothyroidism • Cervical - LN
Imaging Approach for thyroid nodule 2 – institutions ways
• US ( 7-10 MHZ liner – with Doppler study)
• thyroid scintigraphy ( radionuclide 99mTc , 123 Iodine )
• CT , MRI ( none palpable nodule )
• FNA Biopsy
• Palpable Nodule > 1 cm
direct biopsy • Nodule < 1 cm , Cyst also
not appreciated
BY sonographic examination what we can detected ?
• Mass ( nodule Solitary – multiple )
• Cyst • Calcification • Change in thyroid tissue
texture • Cervical LN
Goiter could be presented as retrosternal - upper mediastinal mass
Goiter could compress the trachea
Before after thyroidectomy
Benign lesion
1. Cyst lesion Most common colloid cyst Anechoic , well defined , comet tail appearance
2. Hematoma happen with degenerative nodule
Benign lesion
Nodule ( hyperplasic or adenomatous )
Well defined , smooth margin , texture echogenic –isoechoic , fine hypoechoic rim , curvilinear fine calcification with faint acoustic shadow , equivocal vascularity by Doppler, internal hemorrhage
Benign lesion
Inflammatory condition Hashimoto’s Thyroiditis.
typical sonographic features include: a diffusely enlarged gland demonstrating hypoechoic areas with a very disorganized and heterogeneous pattern
Malignant lesion Papillary carcinoma is the most common thyroid malignancy 75 %
Follicular, Medullary and Aplastic carcinomas and lymphoma make up the remaining 25%
Metastases from lung, breast, and colon cancers
ill defined margin, hypoechoic and
punctuate –micro calcifications
( psammomatous calcification) with acoustic shadow
Hyper vascularity by DopplerThick halo 1-2 mm , cervical LN
Malignant nodule
NHL of thyroid
Thyroid nodule isotopes scan
Hot nodule cold nodule