Abstract
Malignant broncho-pulmonary tumors are the principal cause of the paraneoplastic nephrotic syndrome. These tumors are most often small cell or squamous bronchial carcinomas. In 75% of cases, the nephrotic syndrome is due to membranous glomerulonephritis. We report the case of a 67 years old patient, a chronic tobacco user, followed since June 2019 for a nephrotic syndrome caused by extra-membranous glomerulonephritis. A chest computed tomography revealed a mass of the left lower lobe. Trans-parietal biopsy of this process revealed a squamous bronchial carcinoma. PET scan detected no other fixations. The proteinemia was at 39g/l with albuminemia at 14 g/l. Surgical resection was then indicated and the patient underwent a left lower lobectomy with radical lymph adenectomy. Outcomes were simple with complete resolution of paraneoplastic nephrotic syndrome.
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