Thrombospondin type-1 domain-containing 7A-associated membranous nephropathy after resection of rectal cancer: a case report.

This is the first case in which pathological examination results suggested that THSD7A-associated MN was caused by rectal cancer. Based on the reports of THSD7A-associated MN with malignancy and the pathogenesis of MN, lymph node metastasis may be a risk for cancer-related MN.