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Savu C, Grigorie V, Melinte A, Diaconu C, Iliescu L, Dimitriu M, Balescu I, Bacalbasa N. Giant Intrathoracic Schwannoma: A Case Report. In Vivo 2021; 34:3527-3532. [PMID: 33144463 DOI: 10.21873/invivo.12194] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 08/27/2020] [Accepted: 09/07/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND/AIM Thoracic neurogenic tumors are most frequently located in the posterior part of the mediastinum or on the chest wall, along the intercostal nerves. Schwannomas are very well tolerated for a long period, until the tumor reaches a large size and compression of the neighbouring mediastinal organs, chest wall or spine appears. The purpose of this article was to present a case of a giant right forth intercostal nerve Schwannoma, completely resected by a right antero-lateral thoracotomy. In addition, intrathoracic giant neurogenic tumors are a rarity. CASE REPORT The patient presented with only diminished tolerance to physical activity with no other obvious symptoms. Standard chest radiography revealed a well-defined opacity of subcostal intensity, occupying two thirds of the right hemithorax, forming a common body with the mediastinal shadow. Thoracic computed tomography (CT) identified a 21/11 cm solid mass that compresses the right lung and the right main bronchus with both a solid component and a central liquid area. Open surgery was performed in order to remove the tumor, which was 20.5/12.5/9 cm in size and weighed 1,830 g, well defined, with no invasion of the adjacent organs, having a solid-fibromatous aspect as well as a central necrotic area. The origin of the tumor was confirmed from the posterolateral part of the forth intercostal nerve. Pathology examination and immunohistochemistry confirmed the diagnosis of a benign Schwannoma. CONCLUSION Benign intrathoracic Schwannomas are asymptomatic for long periods and the main therapeutic option is complete surgical resection. The surgical approach, either open or video-assisted is dictated by the localisation of the tumor, local extension and most importantly the size of the neurogenic mass.
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Affiliation(s)
- Cornel Savu
- Department of Thoracic Surgery, "Marius Nasta" National Institute of Pneumophtisiology, Bucharest, Romania .,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Vasile Grigorie
- Department of Thoracic Surgery, "Marius Nasta" National Institute of Pneumophtisiology, Bucharest, Romania
| | - Alexandru Melinte
- Department of Thoracic Surgery, "Marius Nasta" National Institute of Pneumophtisiology, Bucharest, Romania
| | - Camelia Diaconu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,Department of Internal Medicine, Clinical Emergency Hospital of Bucharest, Bucharest, Romania
| | - Laura Iliescu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,Department of Internal Medicine, "Fundeni" Clinical Institute, Bucharest, Romania
| | - Mihai Dimitriu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,Department of Obstetrics and Gynecology, "Sf. Pantelimon" Emergency Clinical Hospital, Bucharest, Romania
| | - Irina Balescu
- Department of Visceral Surgery, "Ponderas Academic Hospital", Bucharest, Romania
| | - Nicolae Bacalbasa
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,Department of Visceral Surgery, Center of Excellence in Translational Medicine, "Fundeni" Clinical Institute, Bucharest, Romania.,Department of Obstetrics and Gynecology, "I. Cantacuzino" Clinical Hospital, Bucharest, Romania
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Stinson LW, Murray MJ, Jones KA, Assef SJ, Burke MJ, Behrens TL, Lennon RL. A computer-controlled, closed-loop infusion system for infusing muscle relaxants: its use during motor-evoked potential monitoring. J Cardiothorac Vasc Anesth 1994; 8:40-4. [PMID: 7909456 DOI: 10.1016/1053-0770(94)90010-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A microcomputer-controlled closed-loop infusion system (MCCLIS) has been developed that provides stable intraoperative levels of partial neuromuscular blockade. Complete neuromuscular blockade interferes with intraoperative motor-evoked potential (MEP) monitoring used for patients undergoing surgical procedures that place them at risk for spinal cord ischemia. Nine patients were studied during which the MCCLIS maintained stable levels of partial neuromuscular blockade and allowed transcranial magnetic motor-evoked potential (TcM-MEP) monitoring during thoracoabdominal aortic aneurysmectomy. The use of TcM-MEP for monitoring intraoperative spinal cord function was balanced against surgical considerations for muscle relaxation with 80% to 90% neuromuscular blockade fulfilling each requirement. Intraoperative adjustment of partial neuromuscular blockade to facilitate TcM-MEP monitoring was also possible with the MCCLIS. The MCCLIS should allow for further investigation into the sensitivity, specificity, and predictability of TcM-MEP monitoring for any patient at risk for intraoperative spinal cord ischemia including those undergoing thoracoabdominal aortic aneurysmectomy.
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Affiliation(s)
- L W Stinson
- Department of Anesthesiology, Mayo Clinic, Rochester, MN 55905
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