Comparative Accuracy and Complications of Palpation-Guided Versus Ultrasound-Guided Core Needle Biopsy of Palpable Breast Lumps in Ahmadu Bello University Teaching Hospital, Zaria.

Background: Breast lumps are a common complaint by women. Palpable breast lumps are accessible to core needle biopsy (CNB) with the aim of obtaining tissue for histologic diagnosis. CNB is achievable either by palpation guidance or image guidance. The superiority of either technique in returning an accurate diagnosis has not been demonstrated in our centre.

Aim: This study aimed to compare the diagnostic accuracy and complications of palpation-guided versus ultrasound-guided CNB techniques in palpable breast lumps.

Materials And Methods: This was a randomised, controlled, comparative study. Consenting patients were randomised into either a palpation-guided or an ultrasound-guided group. All patients subsequently had open surgical biopsy, which represented the control group. Data analysis was done using SPSS, version 21.

Results: Each CNB group had 40 patients. In the palpation-guided group, 24 (54.55%) lumps were benign and 13 (29.55%) were malignant, whilst seven (15.90%) were inconclusive. In the ultrasound-guided group, 31 (65.96%) lumps were benign and 15 (31.91%) were malignant, whilst one (2.13%) was inconclusive. The sensitivity and specificity for palpation-guided CNB were 92.9% and 100%, respectively. The sensitivity and specificity for ultrasound-guided CNB were 100% each. There was no statistically significant difference in sensitivity between the two groups ( value of 0.4828). One patient (2.5%) in the ultrasound-guided CNB group had a hematoma.

Conclusions: This study has shown that CNB has high diagnostic accuracy and low complications in the management of breast lumps, either by palpation-guided or ultrasound-guided techniques. There was no significant difference in accuracy or complications of CNB using either technique.