Primary desmoplastic small round cell tumor of the kidney: a case report in a 14-year-old girl with molecular confirmation.
We report a case of desmoplastic small round cell tumor (DSRCT) arising in the kidney of a 14-year-old female. The subject presented with gross hematuria. Medical imaging uncovered a left renal mass without regional or metastatic extension. The tumor showed morphological, immunohistochemical, and molecular features of DSRCT. Immunostaining revealed polyphenotypic differentiation. Molecular analysis detected the fusion transcript resulting from the t(11;22)(p13;q12) reciprocal translocation, which characterized this neoplasm. Desmoplastic small round cell tumor is a rare, aggressive neoplasm that mainly affects young males and that usually presents with widespread abdominal serosal involvement. This unusual localization should lead one to consider this tumor in the differential diagnosis of small blue round cell tumors of the kidney.
Collardeau-Frachon
Sophie
S
Service d'Anatomie Pathologique, Hôpital Edouard Herriot, Lyon, France. sophie.collardeau-frachon@chu-lyon.fr
Ranchère-Vince
Dominique
D
Delattre
Olivier
O
Hoarau
Stelly
S
Thiesse
Philippe
P
Dubois
Rémi
R
Bergeron
Christophe
C
Dijoud
Frédérique
F
Bouvier
Raymonde
R
D000293:Adolescent; D018943:Anthracyclines / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D014408:Biomarkers, Tumor / Q000032:analysis; D018288:Carcinoma, Small Cell / Q000235:genetics* / Q000556:secondary* / Q000628:therapy; D002880:Chromosomes, Human, Pair 11; D002892:Chromosomes, Human, Pair 22; D003131:Combined Modality Therapy; D003609:Dactinomycin / Q000008:administration & dosage; D005260:Female; D006417:Hematuria; D006801:Humans; D007069:Ifosfamide / Q000008:administration & dosage; D007680:Kidney Neoplasms / Q000235:genetics* / Q000473:pathology* / Q000628:therapy; D015514:Oncogene Proteins, Fusion / Q000032:analysis / Q000235:genetics; D014178:Translocation, Genetic; D014750:Vincristine / Q000008:administration & dosage
D018943:Anthracyclines; D014408:Biomarkers, Tumor; C106032:EWS1-WT1 fusion protein, human; D015514:Oncogene Proteins, Fusion; D003609:Dactinomycin; D014750:Vincristine; D007069:Ifosfamide