Meningiomas account for 25% of spinal tumors, and they are often located in the thoracic spine. The ossified subtype is even rarer, and those with hematopoiesis are rarely described. The mechanism of bone formation ha...Meningiomas account for 25% of spinal tumors, and they are often located in the thoracic spine. The ossified subtype is even rarer, and those with hematopoiesis are rarely described. The mechanism of bone formation has not yet been clarified. A case of ossified spinal meningioma with hematopoiesis occurring in a 78-year-old woman is described. Magnetic resonance imaging revealed a lesion with a dural tail sign at the T9 level located dorsal to the spinal cord. Computerized tomography revealed a high density lesion, as high as the bone signal. Total resection was performed, and the symptoms improved. Pathological findings revealed many psammoma bodies (PBs), bone formation, and bone marrow with hematopoiesis. Both PBs and bone seemed to be based on the same background of calcified structures. This report is the second dealing with ossified spinal meningioma with hematopoiesis. The hardness of the tumor can make the operation more difficult, so that the operation should be performed carefully to avoid injuring the spinal cord.展开更多
Background: Astrocytic tumors of the retina are rare. We report and discuss the clinical features of two cases of retinal astrocytoma along with presenting a current literature review. Case Presentation: Case 1 was a ...Background: Astrocytic tumors of the retina are rare. We report and discuss the clinical features of two cases of retinal astrocytoma along with presenting a current literature review. Case Presentation: Case 1 was a 46-year-old Japanese female who became aware of her decreased visual acuity. A fundus photograph indicated the presence of a 5 mm hemispherical yellow-white tumor, retinal edema and hard exudate around the tumor. In case 2, a 36-year-old Japanese female became aware of her myodesopsia, and presented with a retinal tumor and vitreous hemorrhage in her right eye. Since the tumors occurred in the peripheral retina in both cases, endoresections were performed. Histological examination showed that the tumors were composed of spindle-shaped cells with small nuclei, which was consistent with astrocytes. Conclusion: Pathologically, it can be difficult to differentiate astrocytic tumors. Therefore, when making a diagnosis, it is important that comprehensive examinations be done in conjunction with the clinical findings. Since retinal astrocytoma has a favorable prognosis, provided proper treatment is administered, utilization of endoresection for peripheral astrocytoma may be advantageous in this patient group.展开更多
文摘Meningiomas account for 25% of spinal tumors, and they are often located in the thoracic spine. The ossified subtype is even rarer, and those with hematopoiesis are rarely described. The mechanism of bone formation has not yet been clarified. A case of ossified spinal meningioma with hematopoiesis occurring in a 78-year-old woman is described. Magnetic resonance imaging revealed a lesion with a dural tail sign at the T9 level located dorsal to the spinal cord. Computerized tomography revealed a high density lesion, as high as the bone signal. Total resection was performed, and the symptoms improved. Pathological findings revealed many psammoma bodies (PBs), bone formation, and bone marrow with hematopoiesis. Both PBs and bone seemed to be based on the same background of calcified structures. This report is the second dealing with ossified spinal meningioma with hematopoiesis. The hardness of the tumor can make the operation more difficult, so that the operation should be performed carefully to avoid injuring the spinal cord.
文摘Background: Astrocytic tumors of the retina are rare. We report and discuss the clinical features of two cases of retinal astrocytoma along with presenting a current literature review. Case Presentation: Case 1 was a 46-year-old Japanese female who became aware of her decreased visual acuity. A fundus photograph indicated the presence of a 5 mm hemispherical yellow-white tumor, retinal edema and hard exudate around the tumor. In case 2, a 36-year-old Japanese female became aware of her myodesopsia, and presented with a retinal tumor and vitreous hemorrhage in her right eye. Since the tumors occurred in the peripheral retina in both cases, endoresections were performed. Histological examination showed that the tumors were composed of spindle-shaped cells with small nuclei, which was consistent with astrocytes. Conclusion: Pathologically, it can be difficult to differentiate astrocytic tumors. Therefore, when making a diagnosis, it is important that comprehensive examinations be done in conjunction with the clinical findings. Since retinal astrocytoma has a favorable prognosis, provided proper treatment is administered, utilization of endoresection for peripheral astrocytoma may be advantageous in this patient group.
