Clinical Scorecard: Endoscopic Management of Extensive Dural Defects in Transsphenoidal Surgery Using Acellular Dermal Matrix Graft Suturing: A Technical Overview

At a Glance

Key Highlights

• Endoscopic transsphenoidal approach (TSA) reduces surgical trauma and improves tumor resection visualization compared to traditional approaches.
• Postoperative CSF leakage remains a significant complication, risking infection and prolonged recovery.
• A novel dural suturing technique using acellular dermal matrix (ADM) grafts with a simplified knot-tying method offers a promising alternative to fascia lata and fat packing for skull base reconstruction.

Guideline-Based Recommendations

Diagnosis

• Assess intraoperative dural defects and CSF leakage severity using Esposito grading.

Management

• Preserve pedicled nasoseptal flap (PNSF) for sellar floor reconstruction.
• Use acellular dermal matrix (ADM) grafts sutured to autologous dural edges with 7–0 monofilament nylon sutures for dural repair.
• Reposition sellar floor bone flap and overlay with PNSF and fibrin glue reinforcement.
• Apply nasal packing post-reconstruction to stabilize repair.

Monitoring & Follow-up

• Monitor for postoperative CSF leakage and complications such as intracranial infection, cerebral abscess, and pneumocephalus.
• Evaluate graft fixation integrity intraoperatively and postoperatively.

Risks

• Potential graft displacement with traditional fascia lata and fat packing methods.
• Harvesting fascia lata may increase operative time, trauma, and risk of hematoma or infection.

Patient & Prescribing Data

Five patients aged 31–62 years with craniopharyngioma, aggressive pituitary adenomas, and epidermoid cysts undergoing endoscopic endonasal tumor removal.

ADM graft suturing with simplified knot-tying technique provided reliable dural repair, minimized graft displacement risk, and aimed to reduce postoperative CSF leakage without additional donor site morbidity.

Clinical Best Practices

• Preserve sufficient autologous dural edges during dural incision for effective ADM graft suturing.
• Cut ADM graft to size matching dural defect to optimize suturing time and ease.
• Employ simplified knot-tying technique with loop preparation and tightening to secure ADM graft firmly.
• Use multilayer reconstruction combining ADM graft, sellar bone flap repositioning, PNSF overlay, and fibrin glue for robust skull base repair.
• Apply nasal packing to stabilize reconstruction and prevent graft displacement.

References

• Esposito et al. intraoperative CSF leakage grading
• Ishii et al. dural suturing method
• Heal-All® Absorbable Dural Patch, Yantai Zhenghai Bio-Tech Co., Ltd