翻译成英文：FSGS病变最早见于皮髓交界处且呈局灶节段性分布因而容易误诊、漏诊。因此强调肾组织活检取材应包括皮髓交界组织。

FSGS lesions are first seen at the junction of the cortex and medulla, and they are distributed in a focal segmental manner, making them easy to misdiagnose or miss. Therefore, it is emphasized that renal tissue biopsy samples should include the junctional tissue between the cortex and medulla.