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Purpose <p>Spinal tumors are rare and heterogeneous lesions of the central nervous system. Minimally invasive spinal surgery (MISS) offers several advantages over conventional open laminectomy, including reduced soft-tissue trauma, lower blood loss, and faster recovery. This study presents a 20-year, single-center experience with the minimally invasive paramedian transmuscular approach for spinal tumor resection, assessing its feasibility, safety, and effectiveness across all spinal levels.</p> Methods <p>A retrospective review was conducted of 61 patients who underwent minimally invasive resection of spinal tumors at a tertiary neurosurgical center. Demographic, radiological, operative, and postoperative data were analyzed. Intraoperative neuromonitoring was routinely used. Outcomes included extent of resection, complications, neurological status, and hospital stay.</p> Results <p>The mean age was 54.4 ± 13.5 years, with a predominance of females (70.5%). Most tumors were intradural extramedullary, primarily meningiomas and schwannomas. Gross-total resection was achieved in 85% of cases. The mean operative time was 148&#xa0;min and mean blood loss 197 mL. Complications occurred in 9 patients, with clinically relevant cerebrospinal fluid-related events observed in 3.3%. New neurological deficits developed in 3.3% of patients. The mean hospital stay was 2.2 days. No perioperative mortality occurred, and tumor recurrence was observed in 4.9% during follow-up.</p> Conclusion <p>The minimally invasive paramedian transmuscular approach allows safe resection of selected spinal tumors, including junctional lesions, while achieving high resection rates and acceptable perioperative morbidity. These findings support its use as a feasible surgical option in appropriately selected patients.</p>

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Minimally invasive paramedian transmuscular approach for intracanal tumors: case series, microsurgical technique and outcomes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月18日

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  • Maria Isabel Ocampo-Navia,
  • Mariana Agudelo-Arrieta,
  • Julián Alfonso Sierra-Peña,
  • Daniela Castaño Bustos,
  • Felipe Marín-Navas,
  • Andrés Mendez-Gutierrez,
  • Roberto Diaz Orduz,
  • Miguel Enrique Berbeo Calderón

摘要

Purpose

Spinal tumors are rare and heterogeneous lesions of the central nervous system. Minimally invasive spinal surgery (MISS) offers several advantages over conventional open laminectomy, including reduced soft-tissue trauma, lower blood loss, and faster recovery. This study presents a 20-year, single-center experience with the minimally invasive paramedian transmuscular approach for spinal tumor resection, assessing its feasibility, safety, and effectiveness across all spinal levels.

Methods

A retrospective review was conducted of 61 patients who underwent minimally invasive resection of spinal tumors at a tertiary neurosurgical center. Demographic, radiological, operative, and postoperative data were analyzed. Intraoperative neuromonitoring was routinely used. Outcomes included extent of resection, complications, neurological status, and hospital stay.

Results

The mean age was 54.4 ± 13.5 years, with a predominance of females (70.5%). Most tumors were intradural extramedullary, primarily meningiomas and schwannomas. Gross-total resection was achieved in 85% of cases. The mean operative time was 148 min and mean blood loss 197 mL. Complications occurred in 9 patients, with clinically relevant cerebrospinal fluid-related events observed in 3.3%. New neurological deficits developed in 3.3% of patients. The mean hospital stay was 2.2 days. No perioperative mortality occurred, and tumor recurrence was observed in 4.9% during follow-up.

Conclusion

The minimally invasive paramedian transmuscular approach allows safe resection of selected spinal tumors, including junctional lesions, while achieving high resection rates and acceptable perioperative morbidity. These findings support its use as a feasible surgical option in appropriately selected patients.