Local recurrence along the biopsy track is a
known complication of percutaneous needle biopsy of malignant musculoskeletal
tumours. In order to completely excise the track with the tumour
its identification is essential, but this becomes increasingly difficult
over time. In an initial prospective study, 22 of 45 patients (48.8%)
identified over a three-month period, treated by resection of a
musculoskeletal tumour, had an unidentifiable biopsy site at operation,
with identification statistically more difficult after 50 days.
We therefore introduced the practice of marking the biopsy site
with India ink. In all 55 patients undergoing this procedure, the
biopsy track was identified pre-operatively (100%); this difference
was statistically significant. We recommend this technique as a
safe, easy and accurate means of ensuring adequate excision of the
biopsy track.
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