Depressive disorders are a heterogeneous group of conditions that share the common symptom of dysphoric mood.

抑郁性疾患包括一组具有心情忧郁这一共同症状的若干情况。

Soft tissue sarcomas are a highly heterogeneous and polygenous group of tumor, and characterized by specific chromosome translocations and corresponding fusion genes.

软组织肉瘤是一种起源不同、形态学复杂多样的恶性肿瘤,其诊断和鉴别诊断一直是病理学家们的主要挑战之一。