title: Highly elevated serum CA 125 in a lady with ascites and retroperitoneal mass--a diagnostic dilemma.
abstract: BACKGROUND
  Cancer antigen 125 (CA 125), a widely used tumor marker for monitoring epithelial ovarian cancer, is also found to be raised in non-gynecological tumors and non malignant disease involving peritoneum. We report a case of non-Hodgkin's lymphoma who presented with peritoneal and pleural effusions with a very high level of serum CA 125.
  
  
  METHODS
  Fifty four years female presented with gross ascitis, bilateral moderate pleural effusions, right retroperitoneal mass and a very high serum CA 125 level (4462.60 u/ml). She was initially evaluated to rule out ovarian malignancy but her biopsy from retroperitoneal mass came out to be diffuse large B cell non-Hodgkin's lymphoma.
  
  
  CONCLUSIONS
  In a female patient with ascitis with high serum CA 125 level, a differential diagnosis of lymphoma should not be overlooked unless cytology comes positive for epithelial carcinoma cells.
authors.affiliation: Department of Medical Oncology, Prince Aly Khan Hospital, Aga Hall, Mazgaon, Mumbai.
authors.forename: Nandini
authors.initials: N
authors.lastname: Hazarika
authors.forename: B
authors.initials: B
authors.lastname: Dhabhar
authors.forename: T K
authors.initials: TK
authors.lastname: Saikia
mesh_terms: D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage / Q000627:therapeutic use; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000627:therapeutic use; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000627:therapeutic use; D001201:Ascites / Q000209:etiology*; D018394:CA-125 Antigen; D003520:Cyclophosphamide / Q000008:administration & dosage / Q000627:therapeutic use; D003841:Deoxycytidine / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000627:therapeutic use; D004317:Doxorubicin / Q000008:administration & dosage / Q000627:therapeutic use; D005260:Female; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D008875:Middle Aged; D017239:Paclitaxel / Q000008:administration & dosage / Q000627:therapeutic use; D011241:Prednisone / Q000008:administration & dosage / Q000627:therapeutic use; D011860:Radiography, Abdominal; D012186:Retroperitoneal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014750:Vincristine / Q000008:administration & dosage / Q000627:therapeutic use; D000093542:Gemcitabine
chemical_list: D000964:Antimetabolites, Antineoplastic; D000972:Antineoplastic Agents, Phytogenic; D018394:CA-125 Antigen; D003841:Deoxycytidine; D014750:Vincristine; D004317:Doxorubicin; D003520:Cyclophosphamide; D017239:Paclitaxel; D011241:Prednisone; D000093542:Gemcitabine