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3.P.19 THE LEIDEN EXPERIENCE IN GIANT CELL TUMORS OF THE SACRUM: DOES EXTENDED CORTICAL EXCISION REDUCE THE RECURRENCE RATE?



Abstract

Giant cell tumors (GCT) of the sacrum have a high recurrence rate, up to 33%. Treatment of Giant Cell Tumors (GCT) of the sacrum has many options. Although curettage is more often performed than partial sacral resection the indications are not well described. Large resection in the sacral area is limited, and adequate local adjuvant therapy potentially damages the nervous system. Therefore the type of surgical treatment of sacral GCT is still under debate.

The purpose of this study was to compare clinical outcome after surgical treatment in GCT of the sacrum using two different surgical techniques: curettage and Extended Cortical Excision (ECE).

Pre-operative embolisation was routinely performed, followed by curettage or PSR followed by reconstruction if indicated. Between 1994–2005 11 patients were treated for GCT of the sacrum. Eight were female, 3 men. The median age was 43.5 (14–66) years. The median follow-up period was 60 (6–156) months. Five patients were eventually treated by ECE. The other patients were operated on using different techniques, mainly curettage and/or adjuvant therapy.

Two patients died disease-related 42 and 6 months after primary treatment, both metastasized. All other patients are alive and currently disease-free. Six patients had a recurrence, after 33 (4–140) months. Three patients had a recurrence twice. Three patients received radiotherapy, 1 as palliative treatment and 2 as (adjuvant) therapy for recurrence. No recurrences were seen after ECE compared to 86% (6/7) after curettage only, and 50% (2/4) after curettage with adjuvant therapy.

Extended cortical excision may improve the recurrence rate in sacral GCT.

Correspondence should be addressed to Professor Stefan Bielack, Olgahospital, Klinikum Stuttgart, Bismarkstrasse 8, D-70176 Stuttgart, Germany. Email: s.bielack@klinikum_stuttgart.de