Sevigny G M, Ford M J
Department of Medicine, University of Florida, Gainesville, USA.
Cutis. 1995 Aug;56(2):109-13.
We describe three patients with colloid milium whose lesions showed purpura upon stroking. Two of these patients had juvenile colloid milium and the third had adult colloid milium. Ultramicroscopic examination of purpuric colloid papules showed that the dermal blood vessel walls were infiltrated by colloid material. Traumatic purpura occurring in colloid milium may be analogous to that occurring in systemic amyloidosis. We suggest that the infiltrating colloid material decreases the elasticity of dermal blood vessel walls, accounting for the purpura following minor trauma.
我们描述了3例胶样粟丘疹患者，其皮损在抚摸后出现紫癜。其中2例为青少年胶样粟丘疹，第3例为成人胶样粟丘疹。对紫癜性胶样丘疹进行超微检查发现，真皮血管壁被胶样物质浸润。胶样粟丘疹中出现的创伤性紫癜可能与系统性淀粉样变性中出现的紫癜类似。我们认为，浸润的胶样物质降低了真皮血管壁的弹性，这是轻微创伤后出现紫癜的原因。
