| Autor: |
Kanaev SV, Novikov SN, Krivorot'ko PV, Semiglazov VF, Kryzhevitskiĭ PI, Zhukova LA, Semënov II, Semiglazova TIu, Negustorov IuF |
| Jazyk: |
ruština |
| Zdroj: |
Voprosy onkologii [Vopr Onkol] 2013; Vol. 59 (1), pp. 52-8. |
| Abstrakt: |
We aimed to evaluate different imaging strategies for diagnosis of axillary LNMs in patients with primary breast cancer (BC). 168 consecutive patients with primary BC were included in the study. Functional imaging by scintigraphy (AxSc) with 99mTc-MIBI was performed in static and tomography modes 15 min after i/v injection. Focal areas of tracer accumulation in axial region were considered as sings of LNMs. Ultrasound (US) examination of axillary region was performed on 7.5 kH scanner. Nodes with diameter more than 1 cm were considered abnormal. All patients were operated with axial LN dissection and subsequent histological evaluation. Scintigraphic signs of LNMs revealed in 65 patients: 48--true positive, 17--false positive. Among 103 women with normal AxSc results 27 had LNMs and 76--uninvolved nodes. Sensitivity (Sen), Specificity (Sp) and Accuracy (Ac) of AxSc were as follows: 64%, 82% and 74%. Sonography diagnosed LNMs in 74 women: 56 were metastatic on histology while other 18--uninvolved. On the contrary, 19 of 94 US normal sized nodes were metastatic on histology. US had following values when used for diagnosis of axillary LNMs: Sen--75%, Sp--81%, Ac--78%. When LNMs were diagnosed as the combination of concordantly abnormal US and AxSc examinations Sp reached 95%, Sen dropped down to 56% and Ac--to 77%. Another model was based on the assumption that LNMs must be diagnosed in all patients with abnormal US or AxSc examinations. According to this strategy Sen reached 83%, Sp--68% and Ac--74%. Thus, we found comparative accuracy of US and AxSc in diagnosis of axillary LNMs in patients with primary BC. Combination of both modalities can significantly improve sensitivity (83%) or specificity (95%) of final conclusion which is determined by established diagnostic strategy and criteria's that are used for BC diagnosis. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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