case of schwannoma with hemorrhagic cystic degeneration in the right upper mediastinum was admitted to the Affiliated Hospital of Ningbo University in July 2010. The patient shows symptoms of cough and shortness of breath. He received video-assisted thoracoscopic resection of right upper mediastinal mass. This disease displayed different symptoms depending on tumor size and location.
Humans ; Male ; Mediastinum ; pathology ; Neurilemmoma ; diagnosis ; pathology

Benign Schwannoma rarely involves the vertebral bodies extensively. Despite of huge amount of neoplastic mass and severe destructive bony changes, the neurologic deficits could not be discovered. The authors discussed the findings of plain X-rays, cervical CT, MRI, pathology as well as surgical procedure, and reviewed the literatures.
Magnetic Resonance Imaging ; Neurilemmoma* ; Neurologic Manifestations ; Pathology

Aged ; Genital Neoplasms, Male ; pathology ; Humans ; Male ; Neurilemmoma ; pathology ; Scrotum

Schwannoma is a peripheral nerve tumour, occasionally located in the genitourinary tract. We described an extremely rare case of intratesticular neurinoma in a 79-year-old patient.
Aged ; Humans ; Male ; Neurilemmoma ; pathology ; Testicular Neoplasms ; pathology

Humans ; Laryngeal Neoplasms ; pathology ; Male ; Middle Aged ; Neurilemmoma ; pathology

Two cases of thoracic intramedullary schwannoma confirmed by surgery and pathology are reported. These tumors were hypointense on T1WI, and hyperintense on T2WI with good enhancement on MRI. One case showed typical intramendullary tumor, associated with peritumoral cord swelling and syrinx, and another showed both intramedullary and extramedullary location. Schwannomas of the spinal cord, although very rare, Should be included in the differential diagnosis of intramedullary tumor.
Diagnosis, Differential ; Magnetic Resonance Imaging ; Neurilemmoma* ; Pathology ; Spinal Cord

Benign Schwannoma rarely involves the vertebral bodies extensively. Two cases of widespread involvement of cervical vertebral bodies by Schwannoma are reported. Despite of huge amount of neoplastic mass and severe destructive bony changes, the neurologic deficits were minimal and postoperative result was not discouraging. Finding of plain X-rays, cervical CT scan and tumor pathology were discussed as well as surgical approach.
Neurilemmoma* ; Neurologic Manifestations ; Pathology ; Tomography, X-Ray Computed

PURPOSE: To characterize the MRI appearance of the peripherally located schwannoma as compared with pathologic findings. MATERIALS AND METHODS: 11 cases of 13 lesions of the schwannoma confirmed by pathology were analyzed, retrospectively. T11 T2 and Gadolinium-enhanced T1 weighted sagittal and axial images were obtained. The signal intensity, contour of lesion, and relationship with surrounding tissue were analyzed. All cases were correlated with MRI and pathologic findings. RESULTS: In 9 out of the 11 cases, schwannoma was connected to the main nerve trunk. Among them, tumors were located centrally in 6 cases and eccentrically in 3 cases. MR findings of schwannoma were iso signal intensity on T1WI(8 cases) with muscle intensity, high signal intensity on T2WI(all cases), strong heterogenous enhancement in all cases. 8 cases showing heterogenous appearance on T2WI, showed mixture of Antoni-A and B area and multifocal hemorrhage. Central low and peripheral high signal intensity on T2Wl(Target sign) was mainly high cellular component in the central portion and diffuse myxoid degeneration at the periphery, pathologically. Reversed target appea.rance(central high, peripheral low on T2WI) revealed central cystic degeneration with low cellular component and hemorrhage in the central portion, and high cellular component at the periphery. Linear band-like low signal intensity on T2WI, suggesting capsule of the schwannoma, was not the true capsule proven by pathology. Thin true capsule was not visualized on T2WI. CONCLUSION: MR appearance of schwannoma was non-specific. The signal intensity on T2 weighted MR imaging was determined by the presence of multifocal hemorrhage, focal cystic and myxoid degeneration, admixture of Antoni-A and B area.
Hemorrhage ; Magnetic Resonance Imaging* ; Neurilemmoma* ; Pathology ; Retrospective Studies

PURPOSE: To characterize the MRI appearance of the peripherally located schwannoma as compared with pathologic findings. MATERIALS AND METHODS: 11 cases of 13 lesions of the schwannoma confirmed by pathology were analyzed, retrospectively. T11 T2 and Gadolinium-enhanced T1 weighted sagittal and axial images were obtained. The signal intensity, contour of lesion, and relationship with surrounding tissue were analyzed. All cases were correlated with MRI and pathologic findings. RESULTS: In 9 out of the 11 cases, schwannoma was connected to the main nerve trunk. Among them, tumors were located centrally in 6 cases and eccentrically in 3 cases. MR findings of schwannoma were iso signal intensity on T1WI(8 cases) with muscle intensity, high signal intensity on T2WI(all cases), strong heterogenous enhancement in all cases. 8 cases showing heterogenous appearance on T2WI, showed mixture of Antoni-A and B area and multifocal hemorrhage. Central low and peripheral high signal intensity on T2Wl(Target sign) was mainly high cellular component in the central portion and diffuse myxoid degeneration at the periphery, pathologically. Reversed target appea.rance(central high, peripheral low on T2WI) revealed central cystic degeneration with low cellular component and hemorrhage in the central portion, and high cellular component at the periphery. Linear band-like low signal intensity on T2WI, suggesting capsule of the schwannoma, was not the true capsule proven by pathology. Thin true capsule was not visualized on T2WI. CONCLUSION: MR appearance of schwannoma was non-specific. The signal intensity on T2 weighted MR imaging was determined by the presence of multifocal hemorrhage, focal cystic and myxoid degeneration, admixture of Antoni-A and B area.
Hemorrhage ; Magnetic Resonance Imaging* ; Neurilemmoma* ; Pathology ; Retrospective Studies

Child ; Ear Auricle ; pathology ; Ear Neoplasms ; Female ; Humans ; Neurilemmoma