Acta radiologica (Stockholm, Sweden : 1987) · 2002
Evaluation of axillary status in breast cancer. CT-based determination of sentinel lymph node size.
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Yuen S, Sawai K, Ushijima Y, Okuyama C, Yamagami T, Yamada K, Nishimura T
Аннотация
PURPOSE: To determine whether the location and size of sentinel lymph nodes (SLN) on CT are predictive of the axillary lymph node status in patients with breast cancer.
MATERIAL AND METHODS: Forty patients with confirmed breast cancer underwent 5-mm CT of both breasts and axillae and the most inferior lymph node in the affected axilla was designated the SLN. Based on CT assessment of the axillary lymph node status, 22 (55%) patients then underwent dye- and gamma probe (DGP)-guided SLN biopsy followed by axillary dissection; 18 (45%) underwent dissection without prior SLN biopsy. The localization and status of the SLN determined on CT and by DGP-guided biopsy were compared. Biopsied and excised nodes were subjected to histopathologic examinations.
RESULTS: All SLN identified on CT were close to the lateral thoracic artery and their localization corresponded well with SLN identified by the DGP-guided method. The positive predictive value of CT diagnosis was 100%. Histopathologic examination of excised nodes confirmed that none of the SLN biopsies was false-negative.
CONCLUSION: Our CT criteria were highly accurate for identification and diagnostic assessment of SLN and useful for evaluating the axillary status in patients with breast cancer.
MATERIAL AND METHODS: Forty patients with confirmed breast cancer underwent 5-mm CT of both breasts and axillae and the most inferior lymph node in the affected axilla was designated the SLN. Based on CT assessment of the axillary lymph node status, 22 (55%) patients then underwent dye- and gamma probe (DGP)-guided SLN biopsy followed by axillary dissection; 18 (45%) underwent dissection without prior SLN biopsy. The localization and status of the SLN determined on CT and by DGP-guided biopsy were compared. Biopsied and excised nodes were subjected to histopathologic examinations.
RESULTS: All SLN identified on CT were close to the lateral thoracic artery and their localization corresponded well with SLN identified by the DGP-guided method. The positive predictive value of CT diagnosis was 100%. Histopathologic examination of excised nodes confirmed that none of the SLN biopsies was false-negative.
CONCLUSION: Our CT criteria were highly accurate for identification and diagnostic assessment of SLN and useful for evaluating the axillary status in patients with breast cancer.
Предметные рубрики MeSH
AdultAgedAged, 80 and overAxillaBreast NeoplasmsCarcinomaColoring AgentsFemaleHumansLymph Node ExcisionLymph NodesLymphatic MetastasisMethylene BlueMiddle AgedPalpationPredictive Value of TestsRadionuclide ImagingReverse Transcriptase Polymerase Chain ReactionSentinel Lymph Node BiopsyTomography, X-Ray Computed