sarcoma medullary的用法和样例：
例句
- Myeloid sarcoma is extremely rare, from lack of associated symptoms or diagnostic modalities sensitive for these lesions.
摘要骨髓样肉瘤是一种极罕见的肿瘤，因为这种肿瘤缺乏与其有相关的症状以及敏感的诊断模式。 - Importantly, proximal-type epithelioid sarcoma has a much worse prognosis than the classical, distally located ones.
重要的是近端上皮样肉瘤比起传统末端上皮样肉瘤临床的预后更差。
