TY - JOUR
T1 - Metanephric stromal tumor
T2 - A challenging diagnostic entity in children
AU - Kacar, Ayper
AU - Azili, Müjdem Nur
AU - Cihan, Birsen Songül
AU - Demir, Haci Ahmet
AU - Tiryaki, Hüseyin Tugrul
AU - Argani, Pedram
PY - 2011/12
Y1 - 2011/12
N2 - A case with a renal mass diagnosed as metanephric stromal tumor is presented. A 6-year-old boy presented with frequently recurring urinary tract infections. He had been followed up at different medical centers for the last 2 years with a 2 × 2 cm simple cyst localized in the inferior pole of the left kidney. At our center, ultrasonography revealed a heterogeneous mass in the left kidney with a central cystic component. The patient underwent operation for left renal mass, and heminephrectomy was performed. The 5 × 4 × 2.5 cm left heminephrectomy specimen showed a partially cystic mass composed of bland spindle cells distributed haphazardly, entrapping tubules and glomeruli and producing fine collarettes around some tubules. The cysts were lined with a 1-layered flat or cuboidal epithelium. Histopathologically, the tumor was diagnosed as metanephric stromal tumor. Metanephric stromal tumor is a rare renal neoplasm of childhood that can present as a cystic mass, and the solid component can go radiologically undetected because of the blurring infiltrative margins. By presenting this rare entity, the authors suggest that this should be included in the differential diagnosis, thereby helping to avoid complications and unnecessary treatment.
AB - A case with a renal mass diagnosed as metanephric stromal tumor is presented. A 6-year-old boy presented with frequently recurring urinary tract infections. He had been followed up at different medical centers for the last 2 years with a 2 × 2 cm simple cyst localized in the inferior pole of the left kidney. At our center, ultrasonography revealed a heterogeneous mass in the left kidney with a central cystic component. The patient underwent operation for left renal mass, and heminephrectomy was performed. The 5 × 4 × 2.5 cm left heminephrectomy specimen showed a partially cystic mass composed of bland spindle cells distributed haphazardly, entrapping tubules and glomeruli and producing fine collarettes around some tubules. The cysts were lined with a 1-layered flat or cuboidal epithelium. Histopathologically, the tumor was diagnosed as metanephric stromal tumor. Metanephric stromal tumor is a rare renal neoplasm of childhood that can present as a cystic mass, and the solid component can go radiologically undetected because of the blurring infiltrative margins. By presenting this rare entity, the authors suggest that this should be included in the differential diagnosis, thereby helping to avoid complications and unnecessary treatment.
KW - Cyst
KW - Kidney
KW - Metanephric stromal tumor
KW - Pediatric neoplasm
UR - http://www.scopus.com/inward/record.url?scp=83455171940&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=83455171940&partnerID=8YFLogxK
U2 - 10.1016/j.jpedsurg.2011.08.023
DO - 10.1016/j.jpedsurg.2011.08.023
M3 - Article
C2 - 22152906
AN - SCOPUS:83455171940
SN - 0022-3468
VL - 46
SP - E7-E10
JO - Journal of pediatric surgery
JF - Journal of pediatric surgery
IS - 12
ER -