Diagnostic Differences in Expert Second-Opinion Consultation Cases at a Tertiary Sarcoma Center

Table 5

Vascular tumors with discrepancy in opinion.

Original diagnosis	Second-opinion diagnosis
Malignant to malignant, 3 cases
Poorly differentiated carcinoma	Epithelioid angiosarcoma
Poorly differentiated malignant neoplasm	Epithelioid angiosarcoma
Gastrointestinal stromal tumor	Angiosarcoma
Malignant to benign, 1 case
Low-grade vascular lesion	Hemorrhage with hemangioma
Malignant to intermediate, 1 case
Metastasis of adenocarcinoma	Epithelioid hemangioendothelioma
Benign to benign, 2 cases
Myofibroma	Hemangioma
Angiolipomatous tumor	Hemangioma
Benign to malignant, 1 case
Epithelioid hemangioma	Low-grade angiosarcoma
Intermediate to benign, 2 cases
Kaposiform hemangioendothelioma	Hemangioma
Atypical vascularised tumor of unknown malignant potential	Vascular proliferation and sclerosis