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Biomedical subjects

D W Yim

Publications and source records attributed to D W Yim.

At least 19 recordsLinked to original sources
PubMed1990

Mucoepidermoid carcinoma of the mandible.

Mucoepidermoid carcinomas originating within the body of the mandible are uncommon tumors with histogenesis and treatment reviewed. The second youngest patient in the literature is reported with a tumor originating within the angle of the mandible. Treatment consisted of wide local excision, including composite resection of the mandible without evidence of recurrence at two years.

Carcinoma↗
PubMed1988

Congenital multiple fibromatosis (infantile myofibromatosis).

A female newborn had a rare case of congenital multiple fibromatosis, consisting of multiple fibrous lesions that histologically resemble myofibromas. Bony and soft-tissue lesions usually undergo spontaneous resolution, but excision may be required if vital structures are compromised as was the case in this patient. When the lesions involve the viscera in a generalized form of the disease, the result is often fatal.

Bone Diseases↗
PubMed1988

Thyroid cartilage flap reconstruction of the larynx following vertical partial laryngectomy: an interim report.

A supraglottic thyroid cartilage flap was used to reconstruct vertical partial laryngectomy defects in seven patients, including three radiation failures. Local control was maintained in six of seven patients, with one radiation failure recurring in the subglottis and anterior neck skin. Reconstructively, the radiation failures healed more slowly, but all patients were decannulated in 1 to 4 weeks with normal deglutition. The majority of the ipsilateral arytenoid was preserved in two patients. In the first case, the thyroid cartilage flap was shortened and sutured to the cut surface of the arytenoid. This patient later developed laryngeal stenosis. In the second case, a muscle flap was used to reconstruct the cord, and the thyroid cartilage flap was used externally. This was successful, and we prefer this modification of the Bailey procedure when the arytenoid is preserved.

Carcinoma, Squamous Cell↗
PubMed1986

Complications of the external (combination) rhinoplasty approach.

More rhinoplastic surgeons are using the external (combination) rhinoplasty approach for selected patients. Although several large series report few complications, the initial experience of newcomers may be different. A series of 26 external rhinoplasty approaches was examined, representing the initial experience of supervised residents. The most common complication was incising the anterior margin of the lower lateral cartilage at the juncture of the lateral and medial crura. To prevent this problem, it is recommended that the skin be elevated off the lower lateral cartilages from both a medial direction up over the domes and a lateral direction downward. To repair this complication, a figure-of-eight suture is used to reapproximate the incision.

Adult↗
PubMed1985

Laryngeal cyst of the thyroid cartilage.

Laryngeal cysts of thyroid cartilage origin are unusually rare. A patient had a degenerative cyst of the thyroid cartilage. This presented as a unilateral false cord swelling. Computed tomography helped to localize the lesion to the left thyroid ala. An external laryngeal approach was used for excisional biopsy, and this also proved to be curative. The cyst probably resulted from a traumatic episode 35 years earlier.

Cysts↗
PubMed1985

Thyroid cartilage flap reconstruction of the larynx following vertical partial laryngectomy: a preliminary report in two patients.

Reconstruction of the larynx following vertical partial laryngectomy may be undertaken with many techniques. Methods using soft tissue employ readily accessible structures within the operative field with straightforward reconstructive designs. However, decannulation is often delayed, and variable degrees of atrophy must be planned for. Methods using cartilage may lead to early decannulation without long-term atrophy as a problem. However, grafts or flaps are less accessible, and reconstructive designs are often complex. In addition, chondritis may be a significant problem, especially in radiated patients. A supraglottic thyroid cartilage flap is described that is readily accessible and maintains its blood supply from external and internal perichondrium, as well as internal mucosa. Its use is reserved for unilateral glottic lesions without supraglottic spread. Experience with this technique is described in two patients.

Carcinoma, Squamous Cell↗
PubMed1985

The external (combination) rhinoplasty approach for the problem nose.

The external (combination) rhinoplasty approach has gradually gained acceptance as an approach to expose the nasal infrastructure. Its wide exposure has sharpened diagnostic skills by correlating pre-operative clinical impressions with specific anatomic deformities found at surgery. Its wide access has greatly increased as well as simplified the range of surgical maneuvers used in reconstruction. Following a review of the external approach, attention is focused on some of the problem nasal deformities where this approach has been helpful in obtaining good results. Nasal valve obstruction, nasal tip problems, nasal pyramid depression, and the crooked nose are discussed in terms of pathological anatomy and techniques of repair.

Female↗
PubMed1985

External (combination) rhinoplasty approach for trans-sphenoidal adenectomy.

The external (combination) rhinoplasty approach and the sublabial approach to trans-sphenoidal adenomectomy have been used at this institution for seven years. A summary of experience with the external (combination) rhinoplasty technique in 10 patients is reported; and a comparison is made between this approach and the sublabial approach in 12 patients. Advantages unique to this approach are: the distance to the sphenoid sinus is decreased allowing greater ease of instrumentation, the Hardy speculum may be opened widely to increase exposure, uniquely this allows synchronous cosmetic or reconstructive septorhinoplasty, and this technique is also invaluable for revision surgery--especially when septal cartilage has been removed by a previous sublabial approach. Disadvantages of this technique are the external incision across the columella, which leaves an imperceptible scar of no clinical significance, and postoperative nasal tip edema, which resolves with time.

Adenoma↗
PubMed1984

Autologous fascia grafts in head and neck plastic surgery.

Using an experimental animal model, we studied the stability of the size (gross morphology) and structure (histomorphology) of the fascia autograft. Fascia from a rabbit's leg was grafted in the subcutaneous tissue of the ear and abdomen and also into the intra-abdominal cavity. The weight and size of the autograft were recorded during the study period. Our findings showed that the size of the autograft remained stable, but there was a substantial weight reduction. Microscopic examination of histopathologic sections disclosed that there was no inflammatory response to the fascia. It also appeared to maintain its histomorphologic structure. Clinical trials with patients receiving facial plastic surgery are also reported. We believe a fascia autograft can be used to augment facial areas. We base this conclusion on the findings from previous reports, our animal experiment, and clinical trials.

Adult↗
PubMed1984

Radionuclide thyroid angiography and surgical correlation. A five-year study.

Only 15% to 25% of cold nodules on conventional static thyroid scans are malignant. Radionuclide angiography of the thyroid and conventional static scans using sodium pertechnetate Tc 99m were performed on 114 patients who underwent thyroid surgery within a five-year period. The combined use of radionuclide angiography and conventional static scans increased the specificity for the diagnosis of thyroid carcinoma from 42% to 79% over static scans alone. The incidence of carcinoma in solitary cold nodules in our population was increased from 26% on static scans to 60% if the lesion was hypervascular on radionuclide angiography. Eighty-seven percent of hypervascular solitary cold nodules were neoplasms (carcinomas and adenomas). Hypervascularity as demonstrated by radionuclide angiography is predictive of thyroid neoplasia. The finding of a hypervascular, solitary cold nodule makes a recommendation for surgery predictive and reasonable.

Adenocarcinoma↗
PubMed1984

Bell's palsy: the steroid controversy revisited.

The treatment of Bell's palsy with steroids is controversial. Several series of patients have shown steroids to be beneficial to a statistically significant degree; however, their experimental design was of poor quality and made this data less clinically valuable. The negative trials showing no benefit with steroids did not examine enough patients to have a chance to show a clinically important difference. These series must be considered as partially completed studies and not as conclusive negative trials. A Type I error analysis is the accepted method of statistically analyzing the data of these trials. After reviewing the evidence, it becomes clear that further scientific research is needed.

Adrenal Cortex Hormones↗
PubMed1984

Parotid tumors.

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Adult↗