CASE REPORT: We describe a 44-year-old @entity1 with a primary retroperitoneal @entity19862 as the fourth report in the world literature. A contrast-enhanced computed tomographic scan of the abdomen demonstrated a mass with enhanced solid mural nodules and septa in the left retroperitoneum. Serum CA19-9 was elevated at 181 U/ml. The @entity1 underwent a complete resection of the @entity5 with a partial resection of the psoas major muscle and its fascia. Pathological examination showed a well-differentiated papillary serous @entity43 and locoregional lymph node @entity3 . Seven months after surgery, the @entity1 developed a pelvic recurrence, and underwent a total hysterectomy, a left salpingo-oophorectomy and a resection of the metastatic mesenteric mass. Two months after the second surgery, serum CA19-9 and @entity10224 increased to 1,114 U/ml and 218 U/ml, respectively. A solitary liver metastasis was confirmed on a computed tomographic scan. The @entity1 is now being treated with weekly @entity1205 and @entity3003 . CONCLUSION: The present case illustrates the clinically aggressive nature of a primary retroperitoneal @entity19862 .

A primary retroperitoneal XXXX with clinically aggressive behavior.

@entity1 :: ('9606', 'Species') :: ['woman', 'patient'] @entity43 :: ('MESH:D010051', 'Disease') :: ['cystadenocarcinoma of ovarian type'] @entity5 :: ('MESH:D009369', 'Disease') :: ['retroperitoneal tumor'] @entity3003 :: ('MESH:D016190', 'Chemical') :: ['carboplatin'] @entity19862 :: ('MESH:D018284', 'Disease') :: ['serous cystadenocarcinoma'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastases'] @entity10224 :: ('94025', 'Gene') :: ['CA125'] @entity1205 :: ('MESH:C067311', 'Chemical') :: ['docetaxel']
@entity19862 :: (MESH:D018284,Disease) :: ['serous cystadenocarcinoma']
