The cholinergic and adrenergic nerve innervation and nerve endings of the iris muscle in Cynomolgus monkey eye is studied by electron microscopy. In the iris, the sphincter muscle reveals nerve terminals containing small empty vesicle which is said to be cholinergic in a greater number (about 85% of nerve terminals) and those containing small cored vericles which is said to be adrenergic in a fewer number (about 15% of nerve terminals) and the latter are more frequently found in the region of peripheral one third of the sphincter muscle then the rest two thirds. In the dilator muscle 65% of the nerve terminals is found to be adrenergic and 35% cholinergic. A dual innervation, adrenergic and cholinergic nerves in both the iris dilator and the sphincter muscle, is not clearly explained in their functions, that is, how influence two nerves one another in addition to the effector cells. A single or double layer of basement membrane lies between the nerve terminals and adjacent muscle in the stromal site of iris muscle. In part the close apposition of the nerve with muscle membrane is seperated by an intercellular space of about 200 A, which is much more in the muscle bundles than in the peripheral portion of the sphincter muscle, however a few in the dilator muscle. The two or three adrenergic and cholinergic axons or terminals in the iris muscle are often closely adjacent to one another, which nerve terminals are not clarified, whether two nerves is motor, or afferent and efferent nerve unit.
Axons ; Basement Membrane ; Extracellular Space ; Haplorhini* ; Iris* ; Macaca fascicularis ; Membranes ; Microscopy, Electron ; Nerve Endings*

PURPOSE: To present the enhancement pattern of acute cerebral or cerebellar cortical infarctions aged 1-3 days on MR. MATERIALS AND METHODS: Contrast-enhanced MR images of 26 patients with acute cerebral or cerebellar ischemic events were retrospectively reviewed. MR was performed within 3 days after ictus. RESULTS: Contrast enhancement in the area of infarction was observed in 61.5% (16/26) on MR. Of these 50% (13/26) showed non-parenchymal enhancement (NPE) representing either vascular or leptomeningeal enhancement, 7.7% (2/26) showed parenchymal enhancement (PE), and 2.8% (1/26) showed both NPE and PE. The earliest enhancement was seen in images obtained 12 hours after the onset of symptoms and appeared as NPE. One patient showed NPE without apparent high signal intensity at the corresponding area on T2-weighted images. In 38. 5% (10/26), there was no enhancement. CONCLUSION: Contrast-enhanced MR imaging may be needed in acute ischemic infarction, because NPE may be seen as the earliest MR finding of acute cortical infarction aged 1-3 days.
Cerebral Infarction* ; Humans ; Infarction ; Magnetic Resonance Imaging* ; Retrospective Studies

No abstract available.
Thyroid Gland* ; Thyroid Nodule*

Fibrous dysplasia is a common benign disorder of bone in which normal bone marrow is replaced with fibro-osseous tissue. As PET/CT is increasingly used for the staging of different malignant disease, incidentally found fibrous dysplasia with increased FDG uptake may mimic metastasis. We report on a 46-year-old woman with fibrous dysplasia who underwent PET/CT because of suspected recurrence of breast cancer and was misdiagnosed as a bony metastasis with a focal FDG uptake on left proximal femur. This lesion was interpreted as fibrous dysplasia based on MRI in addition to the plain radiographs. We conclude that MRI in addition to radiography may help to differentiate fibrous dysplasia mimicking metastasis on PET/CT in the patients with malignancy.
Bone Marrow ; Breast ; Breast Neoplasms ; Female ; Femur ; Humans ; Hydrazines ; Middle Aged ; Neoplasm Metastasis ; Recurrence

A case of congenital corneal staphyloma was presented. This 4 year-old boy was premature born and received oxygen in theLincubator during one month after birth. He showed mental retardation, articulation disturbance and gait disturbance. The right eye was free from any anomaly. The left eye was undergone enucleation for cosmetic improvement because of corneal opacity at birth. A detailed histologic examination of the congenital corneal staphyloma was given; epidermidialization of the corneal epithelium, scarring and vascularization of the stroma, with an absence of Bowman's membrane were shown. Descemet-endotheliallayer was completely defective in keratoiridic and corneal-abnormal pigment layer adhesions, but found in the seperated portion between cornea and iris. Iris root was not found in normal position. An abnormal pigment epithelial layer from ciliary epithelium was covered the surface of trabecular meshwork(anterior chamber angle) and an abnormal pigmentation of the trabecular meshwork poorly developed, which was running on iris pigment epithelium and covering inner surface of the cornea. The ciliary body, especially the process was atrophic. The lens was thin membranous and cataractous. Abnormal fibrinous band in the retinal capillary bed was argyrophilic strand. It was suggested that these findings of anterior corneal staphyloma was resulted from primary developmental anomaly of mesodermal and/or neuroectodermal tissue.
Bowman Membrane ; Capillaries ; Cataract ; Child, Preschool ; Cicatrix ; Ciliary Body ; Cornea ; Corneal Opacity ; Epithelium ; Epithelium, Corneal ; Fibrin ; Gait ; Humans ; Intellectual Disability ; Iris ; Male ; Mesoderm ; Neural Plate ; Oxygen ; Parturition ; Pigmentation ; Retinaldehyde ; Running ; Trabecular Meshwork

The authors studied the retinal vascular patterns of human eye suffered from complicated endophthalmitis following by perforating injury and corneal ulcer. The technique of preparing slides to study the retinal vascular patterns were same as previously noted Part I report. A lot of microorganisms, such as cocci, bacilli and fungi are found in the inflamed foci(with or without filaments) around the retinal vessels unless the vessels were completely occluded. Focal and diffuse exudative vasculitis is related to the species of microorganisms and cbserved stage but almost all retinal vessel waIls show diffuse loss of perivascular argyrophilic fibers, socalled "moth eaten" appearance. In the later stage of vasculitis microorganisms are not found in the inflamed focus("punched out" lesion) of the occluded vessels which show as "bark-stripped-dead tree" appearance in reticulin stain.
Corneal Ulcer* ; Endophthalmitis* ; Fungi ; Humans ; Reticulin ; Retinal Vessels ; Retinaldehyde* ; Vasculitis

The authors observed retinal vascular patterns of the blind eyes surgically removed on account of pain, high intraocular pressure and global rupture by injury. Material for the study was 10 eyes which were 4 eyes of long standing absolute glaucoma, late stage of chronic simple glaucoma (3 eyes) and chronic angle closure glaucoma (1 eye). aphakic glaucoma (1 eye) and an eye of chronic simple glaucoma with traumatic global rupture. The technique of preparation of the slides was made of flat preparations of retinal vessels that all nonvascular components were digested with tris-buffered 3% trypsin solution and stained with PAS-hematoxylin and Wilder's reticulin stain. RESULTS OBTAINED AS FOLLOWS; 1. it is possible that diffuse acellularity (predominant loss of endothelium) in the capillaries of the equatorial and posterior portion of retina results from the arterial occlusion. 2. Solitary microaneurysm in the peripheral retinal capillary was found in the early stage and numerous saccular and fusiform aneurysms (rows of bead-like aneurysms) on the venules, and arteriolar and venular capillaries are related to the degree and duration of the venous occlusion. 3. The majority have had venous occlusion initially, on which distal venule there are found rows of bead-like outpouchings, and the occlusive arterioles show fibrinous appearence, accllularity and increasing PAS staining. 4. It is possible that abnormal A-V shunts and venous collaterals result from the venous occlusion and rows of bead-like microaneuysms in the capillaries will be switched over to shunts and collaterals.
Aneurysm ; Arterioles ; Capillaries ; Fibrin ; Glaucoma* ; Glaucoma, Angle-Closure ; Glaucoma, Open-Angle ; Intraocular Pressure ; Reticulin ; Retina ; Retinal Vessels ; Retinaldehyde* ; Rupture ; Trypsin ; Venules

The authors reported clinical review of 85 cases of benign tumors of the eye and its adnexa diagnosed histopathologically for last 15 years at Department of Ophthalmology, Busan National University Hospital. The followings were summarized. 1. The occurence of benign tumors of the eye and its adnexa by age was frequent under 3rd decade but no sexual differences were found. 2. The benign tumors in the eye and its adnexa were frequently involved eye lids (33 cases, 38.8%), orbit (25 cases, 29.4%) and conjunctiva (19 cases, 22.4%) in erder. 3. The frequency of occurence of benign tumors in the eye and its adnexa was dermoid cyst (18 cases, 21.2%), hemangioma (12 cases, 14.1%), cysticercosis and nevus (9 cases, 10.6% in each) and pseudotumor (5 cases, 5.9 %) in order. In addition, 3 rare benign tumors in the ocular adnexa, such as an epibulbar osseous choristoma in the subconjunctiva, a benign mixed tumor originated from medial canthal eccrine gland and hemangioendothelioma located in the eye lid were presented.
Busan ; Choristoma ; Conjunctiva ; Cysticercosis ; Dermoid Cyst ; Eccrine Glands ; Hemangioendothelioma ; Hemangioma ; Nevus ; Ophthalmology ; Orbit

Ultrasonograms were obtained from 27 cases of intraocular and 10 cases of orbital diseases with S.K.L containing a general transducer(A-mode), 1~3 MHz in its frequency and 15mm in its diameter. The authors summerized that these ultrasonograms would provide some benefits in supplementary clinical diagnosis, especially in confirming the presence of intraocular tumors, differential diagnosis of primary and secondary retinal detachment and deciding the location and surgical procedure preoperatively in the orbital tumors.
Diagnosis ; Diagnosis, Differential ; Orbit* ; Orbital Diseases* ; Retinal Detachment ; Ultrasonography*

Extraskeletal osteosarcoma (ESOS) is a very rare malignant tumor of mesenchymal origin. It is rarer than osseous osteosarcoma and there are very few reports of the skin being a primary site. Most reported cutaneous ESOS were accompanied with metastasis in other organs. A 56-year-old man presented with a painful, 1.5x0.8 cm sized, brown-colored nodule on the right girdle area for 3 months. The histologic findings revealed a tumor that was confined to the dermis without connection to the subcutaneous tissue. In addition, there were large amounts of thin and lace-like bony trabeculae and osteoid with neoplastic cells in a highly pleomorphic sarcomatous stroma.
Cicatrix ; Dermis ; Humans ; Middle Aged ; Neoplasm Metastasis ; Osteosarcoma ; Skin ; Subcutaneous Tissue ; Transplants