Pegas Karla Laís, Edelweiss Maria Isabel, Cambruzzi Eduardo, Zettler Cláudio Galleano
Hospital de Clínicas de Porto Alegre, RS, Brazil.
Patholog Res Int. 2010 Jan 4;2010:602523. doi: 10.4061/2010/602523.
Liesegang rings are concentric noncellular lamellar structures, rarely seen in vivo, occurring as a consequence of the accumulation of insoluble products in a colloidal matrix. These characteristic structures are a rare phenomenon usually found in association with cystic or inflammatory lesions and may be mistaken for parasites. The authors examined Liesegang rings from an inflammatory kidney lesion identified previously as a tumoral lesion on computerized tomography. On microscopic evaluation, Liesegang rings can be mistaken for eggs and larvae of parasites, psammoma bodies and calcification. Special stains like PAS, Grocott, von Kossa and Masson's trichrome facilitate the diagnosis.
李塞冈环是同心的无细胞层状结构，在体内很少见，是由于不溶性产物在胶体基质中积累而形成的。这些特征性结构是一种罕见现象，通常与囊性或炎性病变相关，可能被误诊为寄生虫。作者对一个先前在计算机断层扫描中被诊断为肿瘤性病变的炎性肾病变中的李塞冈环进行了检查。在显微镜评估中，李塞冈环可能被误诊为寄生虫的卵和幼虫、砂粒体和钙化。诸如PAS、格罗科特、冯·科萨和马森三色染色等特殊染色有助于诊断。
