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Biomedical subjects

S L Liston

Publications and source records attributed to S L Liston.

48 records · Page 3Linked to original sources
PubMed1979

Traumatic injuries in the parotid region.

The facial nerve, parotid duct, and external ear canal are at risk from penetrating injuries in the parotid region. The areas of the face supplied by the major branches of the facial nerve should be checked in the emergency department so that repair of a cut nerve can be performed while the distal end is able to be stimulated electronically. The parotid duct can be probed and lacerations repaired. The external ear canal should be repaired and stented to prevent stenosis.

Ear, External↗
PubMed1979

Rhinolith: unusual appearance on panoramic radiograph.

This case report describes an unusual radiopaque lesion that was an incidental finding on a routine panoramic radiograph. The location of the rhinolith gave it the appearance of being within the maxillary sinus. The position of any lesion seen on a panoramic radiograph should be confirmed by other radiologic studies.

Adult↗
PubMed1978

Radical neck dissection after prosthetic repair of carotid artery.

A carcinoma of the pyriform fossa developed ten years after a Teflon patch graft angioplasty of the common and internal carotid vessels. The graft was embedded in fibrous tissue and covered by pseudoadventitia, which could be dissected free without difficulty. If radiation therapy is used, it should be administered postoperatively. The Teflon graft can be protected from possible salivary fistulae by a dermal graft that is covered by a levator scapulae muscle flap, which is sutured to the prevertebral fascia to separate the carotid vessels from the pharynx, but it is not recommended that the tumor resection be staged to achieve this carotid protection.

Blood Vessel Prosthesis↗
PubMed1978

Hypercalcemia and head and neck cancer. Bony metastases from tongue cancer.

Hypercalcemia causes lethargy and coma in patients with head and neck cancer. It is important to realize that coma may be due to hypercalcemia and need not be a terminal event in the progress of the tumor. Also, the development of hypercalcemia in a previously normocalcemic patient requires investigation as to the cause of the hypercalcemia. I report two cases of comatose patients, hypercalcemic from bony metastases from tongue cancer, in whom treatment by furosemide and intravenous fluid diuresis, prednisone, sodium phosphate, and mithramycin produced worthwhile remissions. Hypercalcemia may be due to (1) bony metastases, (2) pseudohyperparathyroidism, (3) unrelated associated parathyroid tumors, or (4) a second primary tumor. Even with treatment, hypercalcemia is a bad prognostic sign in patients with head and neck cancer.

Bone Neoplasms↗
PubMed1978

External ear injuries.

The unique shape of the external ear depends on the underlying cartilaginous framework. Injuries of the external ear are common. In dealing with lacerations, subperichondrial hematomas, perichondritis, burns and frostbite, particular care should be taken to maintain the cartilaginous framework and to prevent infection. In this way cosmetic deformities of the external ear can be prevented.

Burns↗
PubMedDate not supplied

Claudication on mastication following bilateral external carotid ligation.

Ligation of both external carotid arteries to control epistaxis can produce a decrease in the blood supply of the muscles of mastication sufficient to cause pain typical of claudication while chewing. We report 3 cases of this complication. We advocate that this procedure be used only in special circumstances.

Adult↗
PubMedDate not supplied

Combined pectoralis major myocutaneous flap with medially based deltopectoral flap for closure of large pharyngocutaneous fistulas.

The pectoralis major myocutaneous flap has become the new and heavily used tool for head and neck reconstruction. This flap is reliable, versatile and allows moving large blocks of skin and soft tissue quickly, with little morbidity to the donor site. This paper describes the concept of combining the pectoralis flap with an ipsilateral medially based deltopectoral flap, to reconstruct a large pharyngostome. The skin incisions must be correctly drawn and the flaps elevated in sequence to prevent interruption of blood supply to the deltopectoral flap. Using the techniques described in the paper, rapid rehabilitation with little morbidity can be achieved.

Aged↗
PubMedDate not supplied

Fourth branchial fistula.

The course of a fourth branchial fistula is reviewed. Although no complete fistula has yet been described, the anatomy of such a fistula can be determined from a knowledge of the embryologic development of the brachial region. The fistula must first ascend over the hypoglossal nerve before caudal to the fourth area arterial structures. This description is different from the one commonly recognized by otolaryngologists.

Branchial Region↗
PubMedDate not supplied

Microfibrillar collagen in the oval window.

Compressed microfibrillar collagen was used to seal openings in cat oval windows. Histologic examination showed the material was well tolerated and produced a good oval window seal. Because of its hemostatic properties, this material should prove to be useful when bleeding is encountered during a stapedectomy.

Animals↗
PubMedDate not supplied

Heterotopic salivary tissue in the neck.

Heterotopic salivary tissue can occur in the upper part of the neck and may be confused with other causes of neck masses. The embryologic basis of the heterotopic salivary tissue is considered to be heteroplasia of the epithelium of the cervical sinus of His. Heterotopic salivary tissue should be surgically excised. The diagnosis is easy if there is a draining sinus, but if there is not a sinus, the diagnosis is usually made coincidental to the removal of the mass as part of the evaluation of a neck mass. Benign and malignant neoplasms can arise in such heterotopic salivary tissue.

Adult↗