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Metastatic liposarcoma of the thyroid gland

Departments of ¹ Radiology, ² Pathology and ³ Endocrinology, Cliniques Universitaires St-Luc, Université Catholique de Louvain, Avenue Hippocrate 10, 1200 Brussels, Belgium

View larger version (88K): [in a new window]   Figure 1. Ultrasound of the neck. A large hypoechoic mass is visualized in the mid portion of the right thyroid lobe. The hyperechoic tip of the needle used for fine needle aspiration is seen at the periphery of the lesion (arrow).

View larger version (133K): [in a new window]   Figure 2. Left: surgical specimen of the thigh; right: thyroid fine needle aspiration cytology. The two specimens are composed of the same atypical cell population containing immature lipoblasts (vacuolated cells).

View larger version (94K): [in a new window]   Figure 3. Axial contrast-enhanced CT scan of neck. Early (35 s delay) reveals an heterogeneous hypodense lesion located on the right thyroid lobe.

View larger version (94K): [in a new window]   Figure 4. Delayed (3 min delay) axial contrast-enhanced CT scan of neck. Demonstrating significant enhancement of the right thyroid nodule is noted apart its medial and lateral margins.

View larger version (94K): [in a new window]   Figure 5. Axial contrast-enhanced CT of pelvis. Demonstrating a large heterogeneous mass discovered incidentally. This mass was resected and pathological examination was consistent with liposarcoma.