title: Mixed epithelial and stromal tumour of the kidney.
abstract: Mixed epithelial and stromal tumour (MESTK) of the kidney is a rare and benign tumour composed of epithelial and spindle cell stromal components with solid and cystic architecture. MESTK is most commonly seen in perimenopausal women, especially those on long-term oestrogen therapy. MESTK is often asymptomatic, detected incidentally on imaging studies. Diagnosis is established by histological examination. Microscopy is reminiscent of ovarian stroma. Malignant transformation, metastasis and recurrences are extremely rare. Treatment is surgical excision of the tumour with usually no recurrences after surgery and good prognosis. We describe a case of MESTK found incidentally on imaging studies.
authors.affiliation: Department of Urology, St John Providence Health System, Madison Heights, Michigan, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Simpson
authors.affiliation: Department of Infectious Disease, William Beaumont Hospital, Royal Oak, Michigan, USA.
authors.forename: Shalini
authors.initials: S
authors.lastname: Koppisetty
authors.affiliation: Department of Pathology, Crittenton Hospital Medical Center, Rochester Hills, Michigan, USA.
authors.forename: Ricardo C
authors.initials: RC
authors.lastname: Alessio
authors.affiliation: Department of Urology, Urology Surgical Associates, Rochester Hills, Michigan, USA.
authors.forename: Anil
authors.initials: A
authors.lastname: Kumar
mesh_terms: D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008875:Middle Aged; D018193:Neoplasms, Complex and Mixed / Q000473:pathology*; D009375:Neoplasms, Glandular and Epithelial / Q000473:pathology*