胃三色染色显示在黏膜下层胶原纤维沉积处染上深蓝色。这种纤维可发生在胃肠道的任何地方，但最常见于食管下端,导致系统性硬化病人食管蠕动障碍。
This trichrome stain of the stomach demonstrates intense blue staining in the submucosa from the collagen deposition. Such fibrosis can occur anywhere in the gastrointestinal tract, but is most common in the lower esophagus, leading to the esophageal dysmotility with systemic sclerosis.
