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Biomedical subjects

F C Koranda

Publications and source records attributed to F C Koranda.

At least 19 recordsLinked to original sources
PubMed1988

The temporalis muscle flap for intraoral reconstruction: technical modifications.

For three years we have used the temporalis muscle flap for reconstruction of intraoral defects. Advantages of this flap are that it is non-hair-bearing, nonbulky, pliable, durable, proximal to intraoral defects, and it results in better articulation and deglutition. We have modified our original technique so that we facilitate transference of the flap by a more anterior transection through the zygomatic arch, we improve the aesthetic reconstruction by use of the transected coronoid process, we produce better function by preventing adhesions and granulation tissue, and we enhance definition of the lingual sulcus by splinting.

Ear↗
PubMed1987

The temporalis muscle flap for intraoral reconstruction.

In this series of seven patients, we used the temporalis muscle flap for reconstruction of tongue and floor-of-mouth defects. For intraoral reconstruction, the temporalis muscle flap has advantages over the standard workhorse flap, the pectoralis major. The temporalis muscle flap is far less bulky, more pliable, non-hair bearing, and in closer proximity to the oral cavity. Use of this muscle does not impair mandibular function. The depression that results after the temporalis muscle has been transferred is minimal. Most of this donor area is covered by hair. The only site where the depression can be significant is at the zygomatic arch, where the tunnel into the mouth is formed after removal of the arch. If the arch is wired back into position, this aesthetic detriment is obviated. In gaining exposure of the zygomatic arch, significant traction can be placed on the soft tissues through which the temporal branch of the facial nerve runs. In one patient, a temporal nerve branch paralysis occurred that required a browpexy; in another patient, there was a transient paresis; and in the others, there was no deficit. The temporalis muscle flap is hardy and durable, and has become our mainstay flap for intraoral reconstruction.

Carcinoma, Squamous Cell↗
PubMed1985

Trapdoor effect in nasolabial flaps. Causes and corrections.

The trapdoor effect is an elevated and bulging deformity of tissue within the semicircular confines of a U-, C-, or V-shaped scar. Various theories to explain this phenomenon are lymphatic and venous obstruction, hypertrophy of the scar, excessive fatty and redundant tissue, beveled wound edges, and contracture of the scar. Our data suggest that scar contracture is the predominant cause of the trapdoor effect in nasolabial flaps. For mild to moderately severe trapdoor deformities, multiple, small Z-plasties about the periphery of the nasolabial flap are indicated. Intralesional triamcinolone acetonide injections may produce a "pharmacologic Z-plasty" effect in some trapdoor deformities. For marked trapdoor deformities, the combination of multiple, small Z-plasties along the semicircular scar and peripheral undermining about the trapdoor defect is the corrective procedure. The trapdoor deformity may be prevented or lessened by peripheral undermining about the recipient site of the flap equal to or greater in area than the recipient site.

Basal Cell Carcinoma↗
PubMed1985

Cheilitis glandularis--a disorder of ductal ectasia.

Cheilitis glandularis is characterized by lip eversion and protrusion with obvious, mucoid-secreting ductal orifices along the mucosal-vermilion boundary. One may see confirmatory microscopic findings of ductal ectasia and metaplasia. Vermilionectomy can be efficacious.

Cheilitis↗
PubMed1982

Surgical management of primary carcinomas of the lower lip.

Carcinomas of lower lips are common neoplasms of the muco-cutaneous junction. Surgical resection of these tumors has the advantages of permitting histologic examination of the margins, achieving excellent cure rates, and yielding good aesthetic and functional results. We present the fundamental surgical procedures for management of pre-cancerous and primary cancerous neoplasms of the lower lip with which the surgical dermatologist should be familiar. These procedures may be done with local anesthesia in an outpatient surgical office. The techniques and case examples we describe include vermilionectomy and mucosal advancement, V-wedge resection, pentagonal wedge resection, and vermilionectomy combined with wedge resection.

Ambulatory Surgical Procedures↗
PubMed1982

Laser surgery in the medically compromised patient.

Dermatology has entered a new dimension with the introduction of the laser. There are expanding clinical indications for laser excision. The CO2 laser in the cutting mode can incise tissue as sharply as finely honed steel, yet its photocoagulative properties allow rapid sealing of blood vessels and lymphatics. The physician can thereby perform in a relatively bloodless surgical field. Minimal adjacent normal tissue is injured, there is less local postoperative edema, and fewer postoperative analgesics are required. Since there is no need to use epinephrine as a local vasoconstrictive agent and there is no need to use electrocoagulation for control of hemorrhage, CO2 laser excision presents less risk to the medically compromised patient. The CO2 laser may also diminish the risk of seeding or spreading neoplastic cells in the perioperative field.

Aged↗
PubMed1982

Squamous-cell carcinoma of the upper lip.

Squamous-cell carcinoma involving the upper lip grows more rapidly and is more difficult to control than squamous-cell carcinoma of the lower lip. The lesion usually is histologically more undifferentiated than squamous-cell carcinoma of the lower lip and metastases develop earlier. A case report of a patient with a squamous-cell carcinoma in an upper lip with regional metastases is presented and illustrated.

Carcinoma, Squamous Cell↗