Early age renal synovial sarcoma.
OBJECTIVE
We report a primary renal Synovial Sarcoma (SS) case and analyze its features.


METHODS
A 15 year old male presented with left abdominal mass and weight loss. CT scan images showed a 13 cm mass located in the lower pole of the left kidney. Renal biopsy recognized an undifferentiated neoplasm, the immunohistochemistry suggesting the probability of neuroectodermic primitive tumor versus SS. Chemotherapy and radical nephrectomy were carried out. Pathological study showed a big multilobulated necrotic tumor 22 x 13 x 12.5 cm. Histopathological study demonstrated a neoplasm composed by immature cells. Currently, patient has survived 1,8 years. A structured bibliographical search was performed in the Medline, Imbiomed and Scielo databases.


RESULTS
The final immunohistochemistry studies gave the diagnosis of poorly differentiated renal SS small cell variety.


CONCLUSIONS
The renal SS is extremely infrequent, with less than 40 cases reported, of which this case reports the earlier age. These tumors, when located in the kidney, represent a great diagnostic challenge that requires adequate clinical, radiological, surgical, and pathological correlation for appropriate diagnosis and treatment.
Romero-Rojas
Alfredo Ernesto
AE
National Cancer Institute, Bogota, Colombia. aromero@cancer.gov.co
Díaz-Pérez
Julio Alexander
JA
Messa-Botero
Oscar Alberto
OA
Neira-Mejia
Fabían Enrique
FE
D000293:Adolescent; D000367:Age Factors; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis; D008297:Male; D013584:Sarcoma, Synovial / Q000175:diagnosis