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Chucheep Sahakitrungruang MD, MSc, Kraisri Chantra MD
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Sacrectomy with adequate margins is challenging because of the complexity of the surgical approach and morbidities. Two-staged sequential approach, therefore, has been advocated. This study was designed to demonstrate the modification of this technique.
This is a case presentation of a 45-year-old man with chordoma involving the lower border of S2, who underwent one-staged subtotal sacrectomy. The technique involved the following: midline incision, mobilization of the rectum, construction of a colostomy and the modified Hartmann stump with intact superior rectal vessels, ligation of internal iliac arteries, ligation of all branches connecting to external iliac veins resulting in “complete isolation” of the external iliac veins, dissection of presacral tissue, anterior osteotomy at the S1-S2 junction and the sacroiliac joints, and abdominal closure. The posterior approach involved a three-limbed incision, dissection of the gluteus muscle and ligaments from the sacrum, subperiosteal dissection, S1 laminectomy, posterior osteotomy corresponding with the anterior osteotomy line with preservation of S1 nerves, division of S2-S4 nerves from sciatic nerves, and specimen removal. Closure of the large sacral defect was undertaken using the Hartmann stump and bilateral gluteus maximus flaps.
En bloc resection with free margins without tumor rupture was accomplished. Operative time was 12 hours. Blood transfusion was 6 units. This patient had a good recovery without complications. He was able to ambulate within 1 week and walk normally within 1 month. No recurrence was found at a 24-month-follow-up.
One-staged sacrectomy can be safely performed, obtaining the satisfactory outcomes.
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