title: Estrogen receptor status in primary breast cancer: iodine 123-labeled cis-11beta-methoxy-17alpha-iodovinyl estradiol scintigraphy.
abstract: OBJECTIVE
  To determine the sensitivity of iodine 123 ((123)I)-labeled cis-11beta-methoxy-17alpha-iodovinyl estradiol (Z-MIVE) scintigraphy for the detection of estrogen receptors in patients with primary breast carcinoma.
  
  
  METHODS
  In 22 patients, estrogen receptor status was assessed with planar scintigraphy and single photon emission computed tomography (SPECT) 4 hours after the injection of 185 MBq (123)I-labeled Z-MIVE. For histologic and estrogen receptor immunohistochemical analysis, breast carcinoma tissue was obtained in all patients by means of biopsy or resection of the primary tumor. Two experienced physicians semiquantitatively scored the scintigraphic and immunohistochemical findings. The uptake ratio at scintigraphy and the immunohistologic staining intensity were scored as negative, weak, intermediate, or strong.
  
  
  RESULTS
  All patients had histologically proven breast cancer. Immunohistologic staining for estrogen receptors yielded negative findings in four patients and positive findings in 18 (weak staining, n = 2; intermediate staining, n = 6; strong staining, n = 10). Planar (123)I-labeled Z-MIVE scintigraphic findings were negative in five patients and positive in 17 (weak uptake, n = 2; intermediate uptake, n = 10; strong uptake, n = 5), resulting in one false-negative finding. Findings at (123)I-labeled Z-MIVE SPECT were negative in four patients and positive in 18. The sensitivities of (123)I-labeled Z-MIVE scintigraphy for estrogen receptors were 100% with SPECT and 94% with planar scintigraphy. The correlation between immunohistologic and planar scintigraphic scores of estrogen receptor status was 0.72 (P <.01).
  
  
  CONCLUSIONS
  (123)I-labeled Z-MIVE scintigraphy is a sensitive noninvasive tool for the detection of estrogen receptors in patients with breast cancer.
authors.affiliation: Department of Nuclear Medicine, Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands. r.bennink@amc.uva.nl
authors.forename: R J
authors.initials: RJ
authors.lastname: Bennink
authors.forename: L J
authors.initials: LJ
authors.lastname: Rijks
authors.forename: G
authors.initials: G
authors.lastname: van Tienhoven
authors.forename: L A
authors.initials: LA
authors.lastname: Noorduyn
authors.forename: A G
authors.initials: AG
authors.lastname: Janssen
authors.forename: G W
authors.initials: GW
authors.lastname: Sloof
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D002277:Carcinoma / Q000000981:diagnostic imaging*; D004958:Estradiol / Q000031:analogs & derivatives; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008875:Middle Aged; D019275:Radiopharmaceuticals; D011960:Receptors, Estrogen / Q000032:analysis*; D012680:Sensitivity and Specificity; D015899:Tomography, Emission-Computed, Single-Photon; D014753:Vinyl Compounds
chemical_list: D019275:Radiopharmaceuticals; D011960:Receptors, Estrogen; D014753:Vinyl Compounds; D004958:Estradiol; C042716:17 alpha-iodovinyl-11 beta-methoxyestradiol