Reid J D, Kommareddi S, Lankerani M, Park M C
JAMA. 1980 Nov 28;244(21):2441-2.
Chronic exapnding hematomas occur in many locations, often simulating neoplasms. All have the same structure with a central mass of blood, a wall of granulation tissue, and dense, fibrous tissue at the periphery. The self-perpetuating exapnding nature of the lesion appears to be due to the irritant effects of blood and its breakdown products, causing repeated exudation or bleeding from capillaries in the granulation tissue.
慢性扩展性血肿可发生于许多部位，常类似肿瘤。所有慢性扩展性血肿都具有相同的结构，中央为血凝块，周围是肉芽组织壁，最外层是致密的纤维组织。病变持续扩展的特性似乎是由于血液及其分解产物的刺激作用，导致肉芽组织中的毛细血管反复渗出或出血。
