Abstract. Desmoplastic small round cell tumors (DSRCTs) were initially characterized as exhibiting divergent differentiation and were extremely aggressive, belonging to the family of 'small round blue cell tumors'. Due to a male predominance, to date, only 15 cases in women have been reported in the English literature. The present study describes a case of DSRCT in a young woman who initially presented with ovarian masses accompanied with lymph node and lung metastases. A correct diagnosis was reached by combining the hematoxylin and eosin, and immunohistochemical staining results. Following surgery, the patient underwent the chemotherapy and, 3 months later, is in a good condition. The study also provides an overview of this uncommon disease.
IntroductionDesmoplastic small round cell tumor (DSRCT) was originally described and reported in a study by Gerald and Rosai in 1989 (1). DSCRT is very uncommon and only 15 cases in the English literature were reported until now (2-10). The DSRCT primarily affects children and young adults, particularly young men, with a reported male to female ratio of 4:1 (11). The initial presenting symptoms are associated with the tumor involvement, such as pain and abdominal distention, however, the majority of the patients present with widespread intra-abdominal and pelvic involvement when first examined. The mass was characterized as exhibiting divergent differentiation and was an extremely aggressive tumor belonging to the family of 'small round blue cell tumors ' (12-15). Despite the aggressive nature of DSRCT, it has low overall survival rates; the overall progression-free 5-year survival rate of patients is 18% (2,16). Since there are no symptoms at the early stage it is very difficult to make correct diagnosis at the early stage. The present study describes a case of DSRCT in a young woman who initially presented with ovarian masses accompanied with lymph node and lung metastases.
Case reportClinical manifestation. On November 11, 2013, a 30-year-old female (gravida 3, para 1) initially presented to West China Second University Hospital (Chengdu, China) with abdominal fullness. Pelvic examination revealed bilateral adnexal masses. The patient's past medical history was unremarkable. Transabdominal and transvaginal ultrasonography showed the adnexal masses were irregular, complex and predominantly solid, but partially cystic. Chest, abdominal and pelvic computed tomography (CT) scans demonstrated multiple, bilateral intrapulmonary nodules, bilateral ovarian masses and pleural involvement. The level of the tumor marker serum carbohydrate antigen-125 (normal, <35 U/ml) was slightly increased at 50.8 U/ml.Treatment. The patient underwent an exploratory laparotomy. Intraoperatively, large, irregular, bilateral ovarian masses accompanying metastatic nodules that varied in size adhering to the diaphragm, peritoneum, omentum, stomach surface and uterine surface were observed. Analysis of the frozen sections revealed that the tumor was composed of small and round tumor cells growing in...