title: Optimised nuclear medicine method for tumour marking and sentinel node detection in occult primary breast lesions.
abstract: The aim of this study was to evaluate the feasibility of sentinel node (SN) biopsy in occult breast lesions with different radiopharmaceuticals and to establish the optimal lymphoscintigraphic method to detect both occult lesions and SNs (SNOLL: sentinel node and occult lesion localisation). Two hundred and twenty-seven consecutive patients suspected to have clinically occult breast carcinoma were enrolled in the study. In addition to the radioguided occult lesion localisation (ROLL) procedure, using macroaggregates of technetium-99m labelled human serum albumin (MAA) injected directly into the lesion, lymphoscintigraphy was performed with nanocolloids (NC) injected in a peritumoral (group I) or a subdermal site (group II). In group III, a sole injection of NC was done into the lesion in order to perform both ROLL and SNOLL. Overall, axillary SNs were identified in 205 of the 227 patients (90.3%). In 12/62 (19.4%) patients of group I and 9/79 (11.4%) patients of group III, radioactive nodes were not visualised, whereas SNs were successfully localised in 85 of 86 patients of group II ( P<0.001). Pathological findings revealed breast carcinoma in 148/227 patients (65.2%) and benign lesions in 79 (34.8%). A total of 131 axillary SNs were removed in 118 patients with breast carcinoma; intraoperative examination of the SNs revealed metastatic involvement in 16 out of 96 cases of invasive carcinoma (16.7%). It is concluded that the combination of the ROLL procedure with direct injection of MAA into the lesion and lymphoscintigraphy performed with subdermal injection of radiocolloids represents the method of choice for accurate localisation of both non-palpable lesions and SNs.
authors.affiliation: Division of Nuclear Medicine, European Institute of Oncology and University of Milan, Milan, Italy. concetta.de-cicco@ieo.it
authors.forename: C
authors.initials: C
authors.lastname: De Cicco
authors.forename: G
authors.initials: G
authors.lastname: Trifirò
authors.forename: M
authors.initials: M
authors.lastname: Intra
authors.forename: G
authors.initials: G
authors.lastname: Marotta
authors.forename: A
authors.initials: A
authors.lastname: Ciprian
authors.forename: A
authors.initials: A
authors.lastname: Frasson
authors.forename: G
authors.initials: G
authors.lastname: Prisco
authors.forename: A
authors.initials: A
authors.lastname: Luini
authors.forename: G
authors.initials: G
authors.lastname: Viale
authors.forename: G
authors.initials: G
authors.lastname: Paganelli
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000473:pathology* / Q000556:secondary; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007267:Injections / Q000379:methods; D008198:Lymph Nodes / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000473:pathology*; D008207:Lymphatic Metastasis; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D010173:Palpation; D010316:Particle Size; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000008:administration & dosage / Q000737:chemistry / Q000493:pharmacokinetics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D021701:Sentinel Lymph Node Biopsy / Q000379:methods*; D013668:Technetium Tc 99m Aggregated Albumin / Q000008:administration & dosage* / Q000737:chemistry / Q000493:pharmacokinetics
chemical_list: D014408:Biomarkers, Tumor; D019275:Radiopharmaceuticals; D013668:Technetium Tc 99m Aggregated Albumin