Levy Jaime, Ilsar Michael, Deckel Yael, Pe'er Jacob
Department of Ophthalmology, Soroka University Medical Center, Beer-Sheva, Israel.
Clin Exp Ophthalmol. 2009 Apr;37(3):313-5. doi: 10.1111/j.1442-9071.2009.02022.x.
Liesegang rings are laminated precipitation structures well recognized in the field of chemistry. We present a rare case of a 64-year-old man who sought examination for a conjunctival cystic lesion of several months' duration, located in the right nasal bulbar conjunctiva near the plica semilunaris. The lesion was excised completely and uneventfully under local anaesthesia. Histopathological examination revealed a large folded cyst in the substantia propria. The cyst contained multiple eosinophilic concentrically spherical and oval structures of variable size with an amorphous central core compatible with Liesegang rings. No fungal or parasitic organisms were identified. This is the first photographically documented case of Liesegang rings appearing in the conjunctiva. Liesegang ring formation should be taken into account during histopathological examination of a conjunctival cyst and not be misdiagnosed as a parasitic infection.
李泽冈环是化学领域中广为人知的层状沉淀结构。我们报告一例罕见病例，一名64岁男性因右眼鼻侧球结膜半月襞附近持续数月的结膜囊性病变前来就诊。该病变在局部麻醉下被完整且顺利地切除。组织病理学检查显示固有层有一个大的折叠囊肿。囊肿内含有多个大小不一的嗜酸性同心球形和椭圆形结构，其无定形核心与李泽冈环相符。未发现真菌或寄生虫。这是结膜出现李泽冈环的首例有照片记录的病例。在结膜囊肿的组织病理学检查中应考虑到李泽冈环的形成，避免误诊为寄生虫感染。
