title: Case report: renal phosphate wasting, syndrome of inappropriate antidiuretic hormone, and ectopic corticotropin production in small cell carcinoma.
abstract: Renal phosphate wasting related to a tumor (oncogenous osteomalacia) is a rare disorder usually associated with benign mesenchymal tumors. In this article, the authors describe a man with renal phosphate wasting and the syndrome of inappropriate antidiuretic hormone associated with small cell carcinoma. Chemotherapy markedly reduced tumor burden and was associated with normalization of renal phosphate handling and serum sodium. With recurrence, renal phosphate wasting and the syndrome of inappropriate antidiuretic hormone developed again, with the additional complication of hypercortisolism secondary to ectopic corticotropin production. The authors report the rare occurrence of renal phosphate wasting with small cell carcinoma (5 previously reported cases) and the unique co-existence of this paraneoplastic syndrome with the syndrome of inappropriate antidiuretic hormone and ectopic corticotropin production.
authors.affiliation: Department of Medicine, St. Luke's Medical Center, Milwaukee, Wisconsin, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Shaker
authors.forename: R C
authors.initials: RC
authors.lastname: Brickner
authors.forename: A B
authors.initials: AB
authors.lastname: Divgi
authors.forename: H
authors.initials: H
authors.lastname: Raff
authors.forename: J W
authors.initials: JW
authors.lastname: Findling
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000378:metabolism*; D018288:Carcinoma, Small Cell / Q000150:complications* / Q000503:physiopathology; D005260:Female; D006801:Humans; D007177:Inappropriate ADH Syndrome / Q000209:etiology* / Q000503:physiopathology; D008175:Lung Neoplasms / Q000150:complications* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010018:Osteomalacia / Q000209:etiology* / Q000503:physiopathology
chemical_list: D000324:Adrenocorticotropic Hormone