Primary Angiosarcoma of the Thyroid in an Asian Woman: A Case Report with Review of the Literature

Table 1

Clinical features of enclosed patients (59 cases).

Tumor characteristics	Case number (%)
Size of tumor
<5 cm	13 (22.0%)
≧5 cm	33 (55.9%)
No specified	13 (22.0%)
Extrathyroidal extension
Present	21 (35.6%)
Not identified/not mentioned	38 (64.4%)
Local recurrence
Present	16 (27.1%)
Not identified/not mentioned	43 (72.9%)
Metastasis throughout the whole course
Not found	33 (58.9%)
LNs (mediastinal, cervical, supraclavicular, mediastinal, and paratracheal)	8 (14.3%)
Lungs/pleura	17
Bone/bone marrow	4
Brain	3
Skin	1
Esophagus	1
N/A	3 (including our case)