Fine-needle aspiration biopsy for breast lesions: a comparison between two devices for obtaining cytological samples
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Data
2005
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CONTEXT AND OBJECTIVE: Fine-needle aspira-
tion biopsy has been accepted worldwide for
breast lesions. However, some questions remain,
including the appropriateness of the puncture
method. The objective of this work was to com-
pare aspirates obtained by the auto-vacuum
device and by the syringe pistol holder.
DESIGN AND SETTING: Randomized trial for
validation of diagnostic method, at Hospital das
Clínicas da Universidade Federal de Goiás and
Hospital Araújo Jorge, Goiânia.
METHODS: 351 patients presenting breast lumps
underwent fine-needle aspiration biopsy, either
with the auto-vacuum device or the syringe pistol
holder. A single cytopathologist analyzed all of
the cytology slides. The rates of insufficient mate-
rial, cellularity, cell distortion and background
hemorrhage were evaluated.
RESULTS: The percentages of insufficient mate-
rial were 16% and 22% (p = 0.18), for the
auto-vacuum and pistol aspirates, respectively.
Good cellularity was seen in 34% of auto-
vacuum and 29% of pistol samples (p = 0.4).
Cell distortion was seen in 31 and 26 cases,
respectively (p = 0.7). Background hemor-
rhage occurred in 63 (35%) and 54 cases
(31%) (p = 0.2), for auto-vacuum and pistol.
The sensitivity was 88% and 86%; specificity
99% and 100%, positive predictive value 96%
and 100%, negative predictive value 96% and
95% and total accuracy 76% and 75% for the
auto-vacuum and pistol, respectively.
CONCLUSION: The results obtained from the
two fine-needle aspiration biopsy methods were
equivalent. Therefore, the auto-vacuum device
is a good option for obtaining aspirates for
cytology.
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Palavras-chave
Breast neoplasms, Techniques, Biopsy, Diagnosis, Cytology
Citação
FREITA JÚNIOR, Ruffo; MOREIRA, Marise Amaral Rebouças; SOUZA, Gustavo Antônio de; HARDY, Ellen; PAULINELLI, Regis Resende. Fine-needle aspiration biopsy for breast lesions: as comparison between two devices for obtaining cytological samples. São Paulo Medical Journal, São Paulo, v. 123, n. 6, p. 27-276, 2005.