Related Experiment Video
Updated: Aug 9, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
Intrathecal granuloma complicating chronic spinal infusion of morphine. Report of three cases
J P Blount1, K B Remley, S K Yue
1Department of Neurosurgery and Radiology, University of Minnesota School of Medicine, St. Paul, USA.
Abstract:
Intrathecal morphine delivered by implanted pumps has been used in the treatment of pain caused by terminal cancer. Some authors supports its use in benign pain as well. The authors present three cases in which chronic infiltration of intraspinal narcotic medication was complicated by the formation of a granulomatous mass that became large enough to exert mass effect and induce neurological dysfunction.
Insights
Intraspinal narcotic medication via implanted pumps can cause granulomas, leading to neurological issues. This complication requires careful consideration for patients with chronic pain, even those with cancer.
Area of Science:
- Neurology
- Neurosurgery
- Pain Management
Background:
- Intrathecal morphine via implanted pumps is a treatment for cancer pain.
- Its use in benign pain is also supported.
- Chronic intraspinal narcotic medication is administered for pain management.
Observation:
- Three cases of granuloma formation are presented.
- These granulomas resulted from chronic intraspinal narcotic medication.
- The granulomas exerted mass effect and caused neurological dysfunction.
Findings:
- Chronic intraspinal narcotic medication infiltration can lead to granulomatous mass formation.
- These masses can cause significant neurological deficits due to mass effect.
- This complication is observed in patients receiving long-term intraspinal medication.
Implications:
- Highlights a potential complication of long-term intrathecal narcotic use.
- Suggests the need for monitoring neurological function in patients with implanted pumps.
- Informs clinical decisions regarding the use of intraspinal narcotics for chronic pain management.
Related Concept Videos
Local Anesthetics: Clinical Application as Spinal Anesthesia
Local Anesthetics: Clinical Application as Epidural Anesthesia
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...

