BACKGROUND: There are few reported cases of @entity420 of unknown primary site (ACUPS) presenting with @entity19634 , and no cases presenting as an isolated retroperitoneal pelvic mass. CASE: This is a case of a 36-year-old @entity1 who presented with an isolated "pelvic" mass and @entity19634 . The @entity1 underwent abdominal hysterectomy and bilateral salpingo oophorectomy with resection of the retroperitoneal lymph nodes. Surgical findings included normal-appearing uterus, fallopian tubes, and ovaries, with bilaterally enlarged pelvic lymph nodes. Pathology was positive for @entity420 only in the pelvic lymph nodes. Uterine, ovarian, and fallopian tube final pathologies were negative for @entity5 . Postoperative metastatic survey was negative, and the @entity1 was diagnosed with ACUPS. The @entity1 received adjuvant chemotherapy consisting of @entity2879 , @entity3003 , and @entity1311 . The @entity1 died 18 months after diagnosis. CONCLUSION: This case reminds us that ACUPS can present as @entity19634 and rarely as an isolated retroperitoneal pelvic mass.

XXXX of unknown primary site presenting as an isolated retroperitoneal mass and @entity19634 .

@entity1 :: ('9606', 'Species') :: ['woman', 'patient'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignancy'] @entity3003 :: ('MESH:D016190', 'Chemical') :: ['carboplatin'] @entity1311 :: ('MESH:D017239', 'Chemical') :: ['taxol'] @entity2879 :: ('MESH:D005047', 'Chemical') :: ['etoposide'] @entity19634 :: ('MESH:D054868', 'Disease') :: ["Trousseau's syndrome"] @entity420 :: ('MESH:D000230', 'Disease') :: ['adenocarcinoma']
@entity420 :: (MESH:D000230,Disease) :: ['Adenocarcinoma']
