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Biomedical subjects

P Guibor

Publications and source records attributed to P Guibor.

At least 19 recordsLinked to original sources
PubMed1984

Mucoepidermoid carcinoma of the conjunctiva.

A 73-year-old man had a limbal nodule that, on histopathologic examination, proved to be mucoepidermoid carcinoma of the conjunctiva. Despite radiation therapy and extensive corneoscleral lamellar resection, widespread invasion of the lids and orbit ultimately led to exenteration. Although mucoepidermoid carcinoma of the conjunctiva resembles squamous cell carcinoma clinically and histopathologically, it pursues a more rapid and destructive clinical course. Intraepithelial invasion often leads to tumor involvement of conjunctiva and skin that seem normal on clinical examination. Special stains and a high level of suspicion are required for diagnosis of mucoepidermoid carcinoma of the conjunctiva, and proper initial management demands more aggressive surgical resection than is usually indicated for squamous cell carcinoma.

Aged↗
PubMed1984

Neurilemoma of the eyelid resembling a recurrent chalazion.

A 63-year-old woman was seen with a slowly enlarging mass located on the right lower eyelid, where a "chalazion" had been twice curetted but not studied histologically. An excisional biopsy was performed, and the specimen proved histologically to be a neurilemoma (schwannoma). Although a neurilemoma is extremely rare on the eyelid, this case demonstrates that it should be included in the differential diagnosis of lesions that can clinically masquerade as a chalazion.

Diagnosis, Differential↗
PubMed1984

Orbital dissection defatting technique for Graves disease.

Five patients with Graves disease and bilateral proptosis were treated with different incisional approaches. They all underwent orbital decompression by removal of the anterior medial orbital walls, the anterior ethmoidal sinuses, the orbital floors, and multiple incisions of the orbital periosteums . The defatting technique, which consists of applying manual anterior orbital pressure with alternate removing of small lobules of fat, was added when it was intraoperatively decided by Hertel exophthalmometer measurement that more decompression was needed. It is estimated that one-third more reduction in proptosis resulted. An average total decrease in proptosis of 9 mm per orbit occurred. Both visual accuities and visual fields returned to normal. The only important complication was the development of hypertropia in down gaze in one patient. A potential value of this technique is its use with orbital floor decompression alone. It may be possible to avoid removing the medial and lateral walls of the orbit, thereby decreasing complications. Defatting may also be a valuable addition in those rare cases where all decompression techniques available are needed to affect an adequate decompression.

Adipose Tissue↗
PubMed1982

Surgical treatment of the denervated or sagging lower lid.

Paralytic ectropion of the lower eyelid and increased curvature of the lower eyelid associated with anophthalmos both cn be optimally treated by use of an autogenous fascia lata sling. Some patients also have problems with prosthesis retention due to lower eyelid deformity with a shortened inferior fornix. In some instances, it is also necessary to perform a horizontal shortening operation on the lower eyelid. In anophthalmic patients, the relationship between prosthesis size and weight and a sagging lower lid is discussed. In some patients when the lower eyelid is elevated, the patient then has an upper lid ptosis for which it is necessary to perform an appropriate levator shortening operation. Surgical technique and illustrative pre- and post-operative photographs are shown.

Blepharoptosis↗
PubMed1978

Choroidal melanoma clinically simulating a retinal angioma.

An amelanotic fundus lesion in a 35-year-old man was associated with a dilated retinal vessel, thus suggesting the diagnosis of retinal angioma. Fluorescein angiography and B-scan ultrasonography were not diagnostic, but a radioactive phosphorus uptake test suggested the lesion was malignant. The enucleated globe showed a malignant choroidal melanoma drained by a large retinal vein.

Adult↗
PubMed1975

Ocular complications of orbital venography.

Three ocular complications directly related to orbital venography are described, one resulting in permanent loss of vision,. The patient had lymphangioma of the orbit which evidently had bled secondary to increased venous pressure and injection of contrast bolus. Both of the 2 patients with transient visual disturbances had diabetic retinopathy. The common factor is felt to be an imparied vascular bed which cannot meet the stress of increased venous pressure and contrast medium injection. Conditions which predispose to ocular-orbital stasis and/or hemorrhage are discussed.

Adolescent↗
PubMedDate not supplied

Expo bandage--flat.

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Adhesiveness↗
PubMedDate not supplied

Lacrimal drain.

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Adult↗
PubMedDate not supplied

Surgical reconstruction of complications associated with fronto-ethmoid mucocele surgery.

Devastating complications can occur following an uncomplicated resection of a fronto-ethmoid mucocele, namely, total blepharoptosis, diplopia, and vertical-horizontal extraocular muscle abnormalities. Four stages of reconstructive surgery were required over a two-year period of time to arrive at an acceptable appearance and useful binocular vision. Maximum care must be exercised when resecting a fronto-ethmoid mucocele. Inadvertent trauma to the orbital anatomy may result in a multitude of serious ocular complications.

Adolescent↗