Epithelioid cell lesions
Epithelioid cell lesions are very common in pathology. Malignant epithelioid lesions are most often carcinomas... but may be a large number different tumours.
Broadly, epithelioid lesions are split into:
General differential diagnosis
A short DDx:
- Carcinoma (primary and metastatic).
- Malignant melanoma.
All rules are made to be broken... some epithelioid lesions are sarcomas:
- Clear cell sarcoma.
- Epithelioid gastrointestinal stromal tumour.
- Synovial sarcoma, primitive round cell type.
- Sarcomas in the small round cell tumours group, e.g. Ewing sarcoma.