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Sandoval-Macias R, Ortiz-Sanchez ID, Remirez-Castellanos AL, Mora-Hernandez L, Cordova-Uscanga C, Mantilla-Morales A, Galindo-Garcia TA, Gamboa-Dominguez A, Candanedo-Gonzalez F. Retrospective analysis of the clinical presentation and imaging of eight primary benign mediastinal schwannomas. BMC Res Notes 2021; 14:278. [PMID: 34289875 PMCID: PMC8296632 DOI: 10.1186/s13104-021-05694-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 07/14/2021] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Mediastinal schwannomas are sometimes confused with other neoplasms during initial radiological studies, especially when there is a history of cancer in another area. In these cases, a more accurate analysis using computed tomography (CT) or even magnetic resonance (MRI) is required. Our study aimed to perform a retrospective analysis of the clinical and imaging features for a series of patients with mediastinal schwannomas that were confirmed by histology and immunohistochemistry. RESULTS We found eight patients, five men and three women, with an average age of 51 years for this study. The main signs and symptoms at diagnosis were chest pain, dyspnea, cough, and dysphagia. CT showed that the tumor was located in the posterior compartment of the chest in 7/8 cases. Tumors > 10 cm were more heterogeneous and showed cystic changes. All patients underwent posterolateral thoracotomy, and radiological follow-up showed no evidence of recurrence. Histological analysis was considered the gold standard to confirm diagnosis, along with at least one neurogenic IHC marker. In conclusion, mediastinal schwannomas are benign encapsulated tumors. According to CT, schwannomas > 10 cm show cystic degeneration more frequently. Posterolateral thoracotomy allows complete resection and is considered the surgical approach of choice.
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Affiliation(s)
- Ramiro Sandoval-Macias
- AFINES Program to Support and Promote Student Research, Medical School, Ciudad Universitaria, UNAM, Mexico City, Mexico
| | - Irving Daniel Ortiz-Sanchez
- AFINES Program to Support and Promote Student Research, Medical School, Ciudad Universitaria, UNAM, Mexico City, Mexico
| | | | - Luis Mora-Hernandez
- Department of Radiology, UMAE Hospital de Oncologia, Centro Medico Nacional Siglo XXI, IMSS, Mexico City, Mexico
| | - Candelaria Cordova-Uscanga
- Department of Pathology, UMAE Hospital de Oncologia, Centro Medico Nacional Siglo XXI, IMSS, Av. Cuauhtemoc No. 330, Col. Doctores, Delegacion Cuauhtemoc, CP 06725, Mexico City, Mexico
| | - Alejandra Mantilla-Morales
- Department of Pathology, UMAE Hospital de Oncologia, Centro Medico Nacional Siglo XXI, IMSS, Av. Cuauhtemoc No. 330, Col. Doctores, Delegacion Cuauhtemoc, CP 06725, Mexico City, Mexico
| | | | - Armando Gamboa-Dominguez
- Department of Pathology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico
| | - Fernando Candanedo-Gonzalez
- Department of Pathology, UMAE Hospital de Oncologia, Centro Medico Nacional Siglo XXI, IMSS, Av. Cuauhtemoc No. 330, Col. Doctores, Delegacion Cuauhtemoc, CP 06725, Mexico City, Mexico. .,Department of Pathology, Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran, Mexico City, Mexico.
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Boré P, Descourt R, Ollivier L, Le Roux PY, Abgral R. False Positive 18F-FDG Positron Emission Tomography Findings in Schwannoma-A Caution for Reporting Physicians. Front Med (Lausanne) 2018; 5:275. [PMID: 30349818 PMCID: PMC6186987 DOI: 10.3389/fmed.2018.00275] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/10/2018] [Indexed: 12/30/2022] Open
Abstract
Schwannoma is a rare source of false-positive 18F-fluorodeoxyglucose (18F-FDG) uptake in Positron-emission tomography (PET/CT), inducing potential errors in staging of several solid cancer, with implications for patient management. This clinical case reports the situation of a patient undergoing an 18F-FDG-PET/CT for initial staging of an ovarian adenocarcinoma. We found a high paramediastinal hypermetabolic mass suspicious of remote extension or secondary synchronous primitive tumor. The biopsy finally reveals a histopathology of Schwannoma, allowing the patient to be eligible for a surgical procedure of her ovarian adenocarcinoma by rejecting the hypothesis of malignancy.
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Affiliation(s)
- Paul Boré
- Service d'Oncologie Médicale, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
| | - Renaud Descourt
- Service d'Oncologie Médicale, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
| | - Luc Ollivier
- Service de Radiothérapie, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
| | - Pierre-Yves Le Roux
- Service de Médecine Nucléaire, EA 3878 (GETBO) IF 148, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
| | - Ronan Abgral
- Service de Médecine Nucléaire, EA 3878 (GETBO) IF 148, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France
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