Endoscopic biopsyMedical editor Ane Konglund MD
Physician in Specialization
Oslo University Hospital
Endoscopic biopsy is performed for symptom-giving lesions in lateral ventricles or 3rd ventricle when diagnostic clarification is important. This particularly applies to lesions that are not accessible for resection, or when there is suspicion of a tumor type that requires non-surgical treatment.
- To establish a diagnosis in order to evaluate further treatment.
- Endoscopy tray, adult
- High speed drill (drill hole)
- Monitor for image transfer
- General anesthesia is given.
- Place the patient in the supine position.
- Fix the head.
- Prophylaxis for infection (single dose).
- Make a small skin incision based on MR images.
- Make a small drill hole and open the dura.
- Insert a rigid endoscope until inside the ventricle system.
- Navigate the scope according to the picture on the monitor until the tumor can be seen.
- Introduce the biopsy forceps via the biopsy channel of the scope.
- Take samples for histology and frozen section.
- Close the skin incision tightly in two layers with sutures.
- Give thrombosis prophylaxis routinely until full mobilization.
- CT on first postoperative day.
- Take blood sample with electrolytes on first postoperative day.
- Remove bandage after a few days, as normal. Remove sutures after 10-12 days.
- The patient is usually discharged to the local hospital 1-2 days after the operation (depending on the clinical course).
- Evaluate oncological treatment according to the histological results.