What question did this study set out to answer?

This research aims to showcase a minimally invasive technique for resecting an Eden type II dumbbell-shaped schwannoma.

March 21, 2026Surgical Case Reports0 citationsOpen Access

Minimally Invasive Extirpation of an Eden Type II Dumbbell-Shaped Mediastinal Tumor Using a Posterior and Uniportal Thoracoscopic Approach without Changing the Patient’s Position: A Case Report

TITakao IshimuraEhime University YSYoshifumi SanoMatsuyama Shimin Hospital SSSeiji ShigekawaEhime University

Key Points

This research aims to showcase a minimally invasive technique for resecting an Eden type II dumbbell-shaped schwannoma.
Performed a single-stage surgery combining posterior and thoracoscopic approaches
Executed entirely in the prone position without intraoperative repositioning
Utilized a uniportal technique for surgical access
Successfully resected the dumbbell-shaped schwannoma
Reduced surgical invasiveness compared to traditional methods
Maintained patient position throughout the procedure

Abstract

INTRODUCTION: Dumbbell-shaped posterior mediastinal tumors, most commonly schwannomas, sometimes extend through the intervertebral foramen into the spinal canal and often require a combined posterior and thoracic approach. Although complete resection is essential, reducing surgical invasiveness remains an important clinical priority. We report a case of an Eden type II dumbbell-shaped schwannoma that was successfully resected using a minimally invasive single-stage approach combining posterior surgery and uniportal thoracoscopic surgery, performed entirely in the prone position without intraoperative repositioning.

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