1/11. Posterior scleral choristoma in the organoid nevus syndrome (linear nevus sebaceus of Jadassohn).PURPOSE: To highlight the association of posterior osseous and/or cartilaginous ocular choristomas with epibulbar choristomas and the nevus sebaceus of Jadassohn. DESIGN: Small case series. PARTICIPANTS: Four patients with the organoid nevus syndrome. methods: Clinical and histopathologic studies in four patients with epibulbar lesions and nevus sebaceus of Jadassohn. MAIN OUTCOME MEASURES: Ophthalmoscopic findings of peripapillary lesions. Computed tomographic and ultrasonographic characteristic of posterior scleral lesions. Ocular histopathologic findings in one globe from one of the study subjects. RESULTS: Three patients had the triad of posterior osseous/cartilaginous ocular choristomas, anterior epibulbar choristomas, and nevus sebaceus of Jadassohn and one patient had anterior epibulbar choristomas and posterior osseous/cartilaginous ocular choristomas. ultrasonography and computed tomography were valuable in detecting scleral ossification or epibulbar cartilage or both. The ophthalmoscopic findings were similar to those of a choroidal osteoma. CONCLUSIONS: The presence of posterior osseous/cartilaginous ocular choristomas in a patient with epilepsy or epibulbar lesions or both suggests the diagnosis of nevus sebaceus of Jadassohn. Osseous/cartilaginous ocular choristomas should be suspected in patients with nevus sebaceus of Jadassohn and peripapillary hypopigmented fundus lesions.- - - - - - - - - - ranking = 1keywords = choroid (Clic here for more details about this article) |
2/11. Optical coherence tomography patterns of choroidal osteoma.PURPOSE: To determine the optical coherence tomographic images that are commonly observed in eyes with choroidal osteoma (choroidal ossification). methods: Three patients with choroidal osteoma were examined by optical coherence tomography. RESULTS: We found two optical coherence tomographic patterns in the eyes with choroidal osteoma. First, multiple tracks of high refractivity were present posterior to the tumor lesion. Second, thick and irregular plate-like, high-signal intensity areas were present in the choroid in the region of the tumor. CONCLUSIONS: Optical coherence tomography can be useful in the diagnosis of choroidal osteoma.- - - - - - - - - - ranking = 10keywords = choroid (Clic here for more details about this article) |
3/11. Intracranial ossifications and microangiopathy at 8 Tesla MRI.Clinical evaluation and MR imaging of microangiopathy associated with hypertension is limited. We describe a case that illustrates sensitivity of MRI at 8 Tesla for imaging of microvasculature, iron, calcium deposits and silent white matter lesions (WML). A 60-year-old black hypertensive woman was evaluated for numbness in the face and extremities. MRI at 1.5 Tesla was unrevealing.MRI at 8 Tesla: Axial and sagittal Gradient Echo images were obtained with an 8T/80 cm human scanner and showed: 1) Large areas of signal voids due to ossifications and fat deposits within the falx. 2) Obstructed small vessels in the periventricular regions and distended cortical veins. 3) Numerous small WML, suggestive of mini-infarcts (<1 cm) and microhemorrhages. 4) Intracranial calcifications in the falx, tentorium, basal ganglia and chorioid plexus that were confirmed by CT scan. Atherosclerotic plaque in right carotid artery and reduced vasomotor reserve in middle cerebral arteries, documented by ultrasound, indicated large and small vessel disease.Conclusions: MRI at 8 Tesla improves visualization of microangiopathy, ossifications and iron deposits due to enhanced magnetic susceptibility at ultra high magnetic field.- - - - - - - - - - ranking = 0.14638181457454keywords = plexus (Clic here for more details about this article) |
4/11. Epibulbar osseous choristoma: case report and review of the literature.Epibulbar osseous choristoma is a choristomatous lesion of the conjunctiva containing bone. Originally called epibulbar osteoma, this lesion was first described by von Graefe in 1863. We discuss a case of a 4-year-old patient who presented with an epibulbar lesion consistent histopathologically with an epibulbar osseous choristoma, and report a review of the literature. The differential diagnosis of osseous choristoma should include classical limbal dermoids, epithelial inclusion cysts, prolapsed orbital fat, papillomas, dermolipomas, and complex choristomas. Although the rarest of epibulbar choristomas, 51 epibulbar osteomas have now been reported in the medical literature. Most commonly, this variety of choristoma presents as an isolated epibulbar lesion within the supratemporal quadrant but may occur in other locations on the surface of the globe and possibly in conjunction with other choristomatous tissue as much as 10% of the time. Frequently, they may involve the muscle or have dense attachments to the underlying sclera. Osseous choristomas most likely represent congenital lesions with a potential for slow growth but may occur in association with trauma. Options for management include observation or surgical excision. When surgery is contemplated, preoperative radiographic imaging may be helpful for assessing adhesion to the sclera or extraocular muscles.- - - - - - - - - - ranking = 0.81217869402716keywords = papilloma (Clic here for more details about this article) |
5/11. Ossified mucin-secreting choroid plexus adenoma: case report.This is the first report of a fully documented case of an ossified mucin-producing benign choroid plexus tumor. This was a chance finding in a man who complained only of posttraumatic low back discomfort. The ossification of the tumor appears to have been therapeutic. Mucin production may be a defense mechanism.- - - - - - - - - - ranking = 34.961846267205keywords = choroid plexus, choroid, plexus (Clic here for more details about this article) |
6/11. magnetic resonance imaging in choroidal osteoma.High resolution magnetic resonance imaging (MRI) with surface coil and contrast material was used to demonstrate the presence of bone in choroidal osteoma. Contrary to initial impressions, choroidal osteoma does not show typical negative image of the bone in MRI scans. The ossifying tumor of the choroid appears as a bright (hyperintense) signal on T1-weighted images and as an area of relative low intensity on T2-weighted images. On contrast T1-weighted scans, the tumor showed gadolinium-DPTA (Gd-DPTA) enhancement. These MRI findings are discussed in relation with histopathologic features of choroidal osteoma and the presence of fat marrow in the intertrabecular spaces of the bone at the level of the choroid.- - - - - - - - - - ranking = 9keywords = choroid (Clic here for more details about this article) |
7/11. choroid plexus papilloma containing bone.The presence of bone in choroid plexus papillomas is a rare event. The authors report a case of choroid plexus papilloma of the IVth ventricle containing bone in a 18-year-old man, and review two previously reported cases, as well as the mechanisms proposed for the presence of bone and cartilage in neuroepithelial neoplasms.- - - - - - - - - - ranking = 103.66640256339keywords = choroid plexus papilloma, plexus papilloma, choroid plexus, choroid, papilloma, plexus (Clic here for more details about this article) |
8/11. Choroidal osteoma after intraocular inflammation.A 12-year-old girl had blurred vision and pain behind her left eye for three months. An examination disclosed focal choroiditis and optic nerve edema. Her visual acuity was 20/30. Two similar previous episodes had been diagnosed as scleritis and uveitis and the patient was still on a regimen of 5 mg of prednisone per day and eyedrops containing prednisolone and phenylephrine. A pink choroidal mass superotemporal to the optic disk was negative for calcium by computed tomography and ultrasonography. The corticosteroids were discontinued. Three months later, the patient's visual acuity had improved to 20/20 but the choroidal lesion was slightly larger and two new lesions had appeared, one just above the optic disk and the other superotemporal to the macula. Three years later the two new lesions had coalesced to form one lesion with vascular channels on its surface. Although a choroidal osteoma was suspected, computed tomography and ultrasonography were still negative for calcium. Five years after the initial examination, computed tomography showed a thin ring of calcium within the choroid at the location of the mass. ultrasonography also confirmed the presence of calcium.- - - - - - - - - - ranking = 5keywords = choroid (Clic here for more details about this article) |
9/11. hemangioma of the choroid. A clinicopathologic study of 71 cases and a review of the literature.This is a clinicopathologic study of 71 hemangiomas of the choroid. The cases were divided into three groups: Group 1 consisted of 45 cases of solitary choroidal hemangiomas (not related to any systemic disease); Group 2 comprised 17 cases with unequivocal evidence of sturge-weber syndrome; and Group 3 included 9 cases, 6 of which were classified as "probably sturge-weber syndrome." Clinically, many differences were found that established a clear distinction between Groups 1 and 2. Histopathologically, the solitary hemangiomas were well-circumscribed tumors that showed a sharply demarcated pushing margin causing compression of melanocytes and choroidal lamellae. About 70% of these tumors were located temporally (at the posterior pole). In contrast, the lesions in the sturge-weber syndrome showed a diffuse angiomatosis involving more than one-half of the choroid, as well as the episcleral and intrascleral perilimbal plexuses. The cause and pathogenesis of these lesions are discussed.- - - - - - - - - - ranking = 8.1463818145745keywords = choroid, plexus (Clic here for more details about this article) |
10/11. An unusual cause of otalgia--an ossified stylohyoid ligament.Otalgia is often related to pathology in areas of the head and neck apart from the ear. This is due to the rich innervation of the ear via the fifth, seventh, ninth and tenth cranial nerves and the cervical plexus. It is estimated that 50% of ear pain is referred from non-otologic sites. A case is reported where otalgia was due to the presence of a bone in place of a ligament in the neck and was relieved by its removal.- - - - - - - - - - ranking = 0.14638181457454keywords = plexus (Clic here for more details about this article) |
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