Calcified intraocular abscess simulating retinoblastoma.
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Abscess↗
Biomedical subjects
R C Eagle
Publications and source records attributed to R C Eagle.
Reoperation following diabetic vitrectomy.
A review of 484 consecutive eyes that were undergoing an initial pars plana vitrectomy for the sequelae of proliferative diabetic retinopathy disclosed that 41 eyes (8.5%) required one or more additional vitrectomy operations. The primary causes for reoperation included rhegmatogenous retinal detachment in 18 (44%) of the 41 eyes, recurrent vitreous hemorrhage in 21 eyes (51%), and glaucoma in two eyes (5%). The visual prognosis was worse in the group with rhegmatogenous retinal detachment, with 10 (56%) of 18 eyes progressing to no light perception (P = .003). Severe preretinal and subretinal fibrous proliferation, as demonstrated histopathologically, accounted in large part for the poor result. The preretinal membrane formation appeared to occur secondary to a combination of diabetic extraretinal vascular growth and proliferative vitreoretinopathy. Among the total group of 41 eyes that required subsequent surgery, the retina eventually remained detached in 18 eyes (44%), and phthisis bulbi occurred in 13 eyes (32%). Rubeosis iridis developed in 17 (94%) of 18 eyes in which the retina remained detached.
Adult↗
Progressive enlargement of a circumscribed choroidal hemangioma. A clinicopathologic correlation.
A man with a circumscribed choroidal hemangioma was followed up for almost 10 years as the tumor showed gradual, progressive enlargement in both diameter and thickness. In spite of photocoagulation therapy, a total retinal detachment and blindness ensued. Enucleation was performed because the possibility of amelanotic choroidal melanoma could not be absolutely excluded. Although the tumor thickness measured by ultrasonography before enucleation was 4.5 mm, the lesion measured only 2.0 mm in thickness in the pathology laboratory. Circumscribed choroidal hemangioma rarely demonstrates clinical evidence of growth. It appears that the tumor enlargement noted in this case was due to venous congestion in the tumor and not to cell multiplication.
Adult↗
Pseudoexfoliative fibrillopathy in visceral organs of a patient with pseudoexfoliation syndrome.
Evidence is increasing that pseudoexfoliative material develops in widespread areas of skin and parabulbar tissues as well as intraocularly. To determine whether this process is even more diffusely distributed, ultrastructural examination was performed on visceral and ocular tissues of a patient with long-standing glaucoma found to have bilateral ocular pseudoexfoliation at autopsy. Aggregates consistent with pseudoexfoliative material were present in the lung, heart, liver, and gallbladder, in addition to the classic intraocular sites. The aggregates were in the fibrovascular septa and stroma of these organs, most frequently adjacent to elastic and oxytalan fibers. They stained positively for elastin and human amyloid P protein, like the ocular sites, in preliminary immunologic testing. Rare atypical aggregates were seen in one of the four control patients. These findings suggest that pseudoexfoliation is a systemic process involving abnormal matrix synthesis, particularly as related to elastic tissue components.
Aged↗
Pigmented adenoma of the optic nerve head simulating a melanocytoma.
PURPOSE: The purpose of this report is to describe a clinicopathologic correlation of an unusual pigmented tumor of the optic nerve head, to point out that such a lesion can simulate clinically a melanocytoma of the optic disc, and to discuss the differential diagnosis of pigmented epipapillary lesions. FINDINGS: Histopathologic studies of the affected eye showed a peculiar pigmented tumor of the optic disc that was compatible with an adenoma arising from the juxtapapillary retinal pigment epithelium. CONCLUSIONS: Adenoma of the retinal pigment epithelium can closely simulate a melanocytoma of the optic disc. There are some clinical features that may serve to differentiate the two lesions.
Adenoma↗
Propionibacterium acnes endophthalmitis after intracapsular cataract extraction.
The authors report a case of Propionibacterium acnes endophthalmitis after intracapsular cataract extraction with implantation of an anterior chamber intraocular lens. The patient's chronic inflammation persisted for 5 years after cataract surgery despite treatment with pars plana vitrectomy, intraocular lens removal, topical and oral steroids, and topical fortified antibiotics. Fluctuations in the inflammation were paralleled by changes in the size and appearance of a white plaque on the posterior corneal surface. Anterior chamber tap cultures were positive for P. acnes after 8 days of incubation under anaerobic conditions. The inflammation was not controlled until the posterior corneal plaque, which was the presumed nidus of the chronic infection, was removed and the patient was treated with intravitreal and oral antibiotics.
Aged↗
Nocardia choroidal abscess.
Nocardia is a Gram positive, aerobic, filamentous branching micro-organism that rarely causes human infection. When infection does occur it usually takes the form of a subcutaneous abscess or a pneumonia-like illness. We describe a case of a patient with chronic lymphocytic leukaemia who developed painless loss of vision in the right eye secondary to a choroidal abscess after a prolonged course of treatment on several immunosuppressive agents. The patient also complained of right shoulder pain that was unresponsive to conventional therapy, and had been admitted and treated for several episodes of 'pneumonia'. A diagnostic transvitreal fine-needle aspiration biopsy of the ocular lesion was performed which demonstrated Nocardia asteroides. This allowed for appropriate antibiotic therapy to be instituted early in the course of the infection and prompted the systemic work-up which also demonstrated central nervous system and arthropic nocardial infection.
Abscess↗
The CT and MRI features of an unusual case of isolated orbital neurofibroma.
A 35-year-old woman developed painful proptosis of the left eye over a period of 3 weeks. Orbital computed tomography and magnetic resonance imaging revealed a well-circumscribed superior orbital tumor with variable density. The mass was removed entirely by way of a superior orbitotomy. Histopathologically, it was found to be a neurofibroma. The patient had no clinical findings of neurofibromatosis. The presence of extensive myxomatous degeneration and the dense collection of collagen bundles in the tumor are correlated with the unusual computed tomography and magnetic resonance imaging features.
Adult↗
Compensatory epithelial hyperplasia in human corneal disease.
Compensatory hyperplasia of the corneal epithelium (CEH) has been observed histopathologically in animal and human eyes after excimer laser photoablative keratectomy, and has been implicated as a cause of variable refractive results and refractive regression after this procedure. Retrospective histopathologic analysis of routine keratoplasty specimens revealed CEH in 85 of 130 (65%) corneas with keratoconus, 18 of 36 (50%) corneas with chronic herpes simplex virus (HSV) keratitis, and 14 of 25 (56%) corneas coded as nonspecific scars. Mild CEH occurred apically and/or peripherally in keratoconus. Massive CEH (up to 200 microns thick) occurred in chronic HSV keratitis with irregular stromal loss. Our data indicate that CEH occurs frequently in several corneal diseases marked by stromal ectasia or loss. We postulate that stromal loss may contribute to CEH by providing relative protection against exfoliative shearing forces of superior eyelid closure. Our study complements previous reports that imply that CEH is a contributory factor in refractive regression after excimer laser photoablation.
Cornea↗
Compensatory epithelial hyperplasia in human corneal disease.
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Chronic Disease↗
An epidemiologic and pathologic study of globes enucleated following trauma.
This retrospective study examined demographic, clinical, and histopathologic factors in 24 traumatically ruptured globes that were enucleated at Wills Eye Hospital during a 2-year period. The majority of these injuries occurred in a violent assault setting with a blunt mechanism, during the evening and early morning hours, and in the fall and winter months. Most patients were black males, and 67% were substance abusers. Clinically, the initial visual acuity in 96% of the eyes was light perception or worse. Five of the eyes were enucleated primarily. Gross examination of the globes revealed that 92% of the wounds involved the sclera, 83% of the eyes had hyphema, and 71% of the lacerations were longer than 10 mm. Histopathologic examination demonstrated that the majority of eyes had fragmented or missing lenses, disrupted ciliary bodies, and detached choroids. Ninety-six percent of the retinas were detached. There was one case of acute endophthalmitis.
Adolescent↗
A case of contact lens related Fusarium solani keratitis.
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Contact Lenses, Hydrophilic↗
The Carney complex with ocular signs suggestive of cardiac myxoma.
We treated a patient who had ophthalmic findings of the Carney complex that led to a search for and the discovery of asymptomatic cardiac myxoma. Substantial morbidity and mortality are associated with the complex because of the occurrence of cardiac myxoma. Facial and eyelid lentigines, conjunctival and caruncle pigmentation and eyelid pigmentation may precede signs or symptoms of cardiac myxoma. A study of the patient's primary relatives disclosed manifestations of the complex transmitted in a manner consistent with mendelian autosomal dominant inheritance.
Adult↗
Histopathologic evidence of fibrovascular ingrowth four weeks after placement of the hydroxyapatite orbital implant.
We studied the histopathologic findings after placement of an orbital hydroxyapatite implant in a patient. The implant was placed after enucleation for a choroidal melanoma and was removed four weeks later because histopathologic examination of the enucleated globe disclosed tumor invasion of the optic nerve that necessitated further orbital tissue removal. Our histopathologic findings confirm that there is significant ingrowth of fibrovascular tissue in these implants, even within weeks of implantation.
Aged↗
Orbital and eyelid involvement with Erdheim-Chester disease. A report of two cases.
Erdheim-Chester disease is an idiopathic condition characterized by infiltration of the heart, lungs, retroperitoneum, bones, and other tissues by a fibrosing xanthogranulomatous process composed of xanthomatous histiocytes and Touton giant cells. This condition is often fatal, with death due to cardiomyopathy, severe lung disease, or chronic renal failure. Ocular findings with this potentially fatal disease are rare. We report the clinical and histopathologic findings in two cases of bilateral xanthelasmas and bilateral orbital infiltrates in association with Erdheim-Chester disease. The first patient was a 38-year-old man with cardiovascular and renal disease and severe retroperitoneal fibrosis. The massive orbital infiltration produced bilateral blindness. The second patient was a 77-year-old man with severe cardiovascular disease and retroperitoneal fibrosis. The diagnosis was confirmed in both patients with retroperitoneal and orbital biopsies. Both patients had the unusual occurrence of bilateral xanthelasmas with bilateral, diffuse orbital masses, eye findings that should alert the clinician to the possibility of this serious systemic disease.
Adult↗
Uveal melanoma and pregnancy. A report of 16 cases.
A review of 3706 consecutive patients with uveal melanoma over a 17-year period revealed that 16 patients (0.4%) were pregnant women at the time of diagnosis. The mean age at presentation in this group was 30 years and the mean months of gestation at the time of diagnosis of the posterior uveal melanoma was 6 months. Seven of the sixteen tumors were active uveal melanomas at the initial examination and were treated immediately, while the remaining nine tumors were initially diagnosed as suspicious choroidal nevi or dormant choroidal melanomas, seven of which grew into active melanomas during the course of the pregnancy, necessitating therapy. The tumors were managed by enucleation in 10 cases, plaque radiotherapy either during or after pregnancy in 4 cases, and observation in 2 cases. Histopathologically, the melanomas did not differ appreciably in cell type, mitotic activity, and other features when compared with a matched group of tumors in nonpregnant women. All of the patients who elected to carry the pregnancy to term (14 cases) delivered healthy babies with no placental or infant metastases. The 5-year survival rate using the life table method in these pregnant women with posterior uveal melanoma is 71% and is similar to the survival of nonpregnant women with posterior uveal melanoma reported in other series.
Adolescent↗
Retinal tolerance of an implantable light source for use during vitrectomy surgery.
To assess for the possible development of a phototoxic lesion, we exposed five Dutch belted rabbit retinas to constant illumination with an implantable "chandelier" light source at maximal intensity for 1 hour. No clinically apparent lesion developed in any of the experimentally treated eyes by 48 to 72 hours posttreatment. Light and electron microscopic examination failed to reveal any of the characteristic changes of retinal phototoxicity. A control eye treated with a 20-minute exposure to a standard endoiluminator probe at maximal intensity held 2 mm from the retinal surface demonstrated typical light and electron microscopic phototoxic abnormalities, whereas a retina similarly treated with a 5-minute exposure was normal. We have confirmed that a standard endoilluminator probe can create a phototoxic lesion in the experimental setting. Furthermore, no phototoxicity from the sustained retinal exposure to a fixed, implantable light source for a clinically relevant duration could be demonstrated.
Animals↗