title: Mixed epithelial and stromal tumor of the kidney (MEST) simulating an upper tract TCC.
abstract: We present a rare and interesting case of a mixed epithelial and stromal tumour (MEST) of the kidney. The case is unique as it involves a male patient with no history of hormonal therapy presenting with a filling defect in the renal collecting system and positive urine cytology. The patient was diagnosed with transitional cell carcinoma of the renal pelvis and subjected to nephroureterectomy, which revealed a solid tumour arising from the lower calyces and extending into the renal pelvis and upper ureter. Pathology revealed a MEST. The patient was disease-free at the 6-month follow-up.
authors.affiliation: Department of Urology, General Hospital of Veria, Greece;
authors.forename: Petros
authors.initials: P
authors.lastname: Sountoulides
authors.forename: Michail
authors.initials: M
authors.lastname: Koptsis
authors.forename: Linda
authors.initials: L
authors.lastname: Metaxa
authors.forename: Alexandros
authors.initials: A
authors.lastname: Theodosiou
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Kikidakis
authors.forename: Chrysa
authors.initials: C
authors.lastname: Filintatzi
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Paschalidis