The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Allan J. Yates - One of the best experts on this subject based on the ideXlab platform.
-
Lipomas of the internal Auditory Canal.
Archives of pathology & laboratory medicine, 1996Co-Authors: Slone W, Allan J. YatesAbstract:Lipoma of the internal Auditory Canal is a rare tumor that may be confused clinically with the much more common vestibular schwannoma. We present two cases of lipoma of the internal Auditory Canal. The clinical presentation is indistinguishable from that of vestibular schwannomas. The high signal intensity on T1-weighted magnetic resonance imaging, both with and without contrast, is consistent with other reports of lipoma. Review of the literature shows that lipomas of the internal Auditory Canal are histopathologically similar to lipomas of the cerebellopontine angle. The symptoms, erosive effect on the Auditory Canal, and gross appearance of this uncommon tumor are sometimes difficult to differentiate from those of a vestibular schwannoma. The diagnosis can be established by intraoperative examination of frozen sections.
Youngsil Park - One of the best experts on this subject based on the ideXlab platform.
-
Nodular Fasciitis of External Auditory Canal
Journal of pathology and translational medicine, 2016Co-Authors: Jihyun Ahn, Sun Young Kim, Youngsil ParkAbstract:Nodular fasciitis is a pseudosarcomatous reactive process composed of fibroblasts and myofibroblasts, and it is most common in the upper extremities. Nodular fasciitis of the external Auditory Canal is rare. To the best of our knowledge, less than 20 cases have been reported to date. We present a case of nodular fasciitis arising in the cartilaginous part of the external Auditory Canal. A 19-year-old man complained of an auricular mass with pruritus. Computed tomography showed a 1.7 cm sized soft tissue mass in the right external Auditory Canal, and total excision was performed. Histologic examination revealed spindle or stellate cells proliferation in a fascicular and storiform pattern. Lymphoid cells and erythrocytes were intermixed with tumor cells. The stroma was myxoid to hyalinized with a few microcysts. The tumor cells were immunoreactive for smooth muscle actin, but not for desmin, caldesmon, CD34, S-100, anaplastic lymphoma kinase, and cytokeratin. The patient has been doing well during the 1 year follow-up period.
Slone W - One of the best experts on this subject based on the ideXlab platform.
-
Lipomas of the internal Auditory Canal.
Archives of pathology & laboratory medicine, 1996Co-Authors: Slone W, Allan J. YatesAbstract:Lipoma of the internal Auditory Canal is a rare tumor that may be confused clinically with the much more common vestibular schwannoma. We present two cases of lipoma of the internal Auditory Canal. The clinical presentation is indistinguishable from that of vestibular schwannomas. The high signal intensity on T1-weighted magnetic resonance imaging, both with and without contrast, is consistent with other reports of lipoma. Review of the literature shows that lipomas of the internal Auditory Canal are histopathologically similar to lipomas of the cerebellopontine angle. The symptoms, erosive effect on the Auditory Canal, and gross appearance of this uncommon tumor are sometimes difficult to differentiate from those of a vestibular schwannoma. The diagnosis can be established by intraoperative examination of frozen sections.
Emanuel Kanal - One of the best experts on this subject based on the ideXlab platform.
-
T2-weighted MR characteristics of internal Auditory Canal masses.
AJNR. American journal of neuroradiology, 1996Co-Authors: Melanie B. Fukui, Jane L. Weissman, Hugh D. Curtin, Emanuel KanalAbstract:PURPOSE To determine whether masses of the internal Auditory Canal are hypointense relative to cerebrospinal fluid, and therefore visible, on fast spin-echo T2-weighted MR images. METHODS Forty-six patients had 50 masses of the internal Auditory Canal, identified initially on contrast-enhanced MR images, that were evaluated retrospectively for signal intensity of the mass with respect to cerebrospinal fluid and for visibility of the neural elements within the internal Auditory Canal on T2-weighted images. RESULTS Forty-seven of 50 masses were clearly identified on T2-weighted images. Three small abnormalities (2 to 4 mm) were not seen with confidence on T2-weighted images. However, on close inspection of these three masses, the small abnormality on contrast-enhanced MR images corresponded to a hypointense focus on T2-weighted images. All 50 masses were hypointense relative to cerebrospinal fluid on T2-weighted images. CONCLUSION All masses of the internal Auditory Canal in this study were hypointense relative to cerebrospinal fluid on T-2 weighted images, and were therefore visible.
Jihyun Ahn - One of the best experts on this subject based on the ideXlab platform.
-
Nodular Fasciitis of External Auditory Canal
Journal of pathology and translational medicine, 2016Co-Authors: Jihyun Ahn, Sun Young Kim, Youngsil ParkAbstract:Nodular fasciitis is a pseudosarcomatous reactive process composed of fibroblasts and myofibroblasts, and it is most common in the upper extremities. Nodular fasciitis of the external Auditory Canal is rare. To the best of our knowledge, less than 20 cases have been reported to date. We present a case of nodular fasciitis arising in the cartilaginous part of the external Auditory Canal. A 19-year-old man complained of an auricular mass with pruritus. Computed tomography showed a 1.7 cm sized soft tissue mass in the right external Auditory Canal, and total excision was performed. Histologic examination revealed spindle or stellate cells proliferation in a fascicular and storiform pattern. Lymphoid cells and erythrocytes were intermixed with tumor cells. The stroma was myxoid to hyalinized with a few microcysts. The tumor cells were immunoreactive for smooth muscle actin, but not for desmin, caldesmon, CD34, S-100, anaplastic lymphoma kinase, and cytokeratin. The patient has been doing well during the 1 year follow-up period.