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Biomedical subjects

T D Wang

Publications and source records attributed to T D Wang.

59 records · Page 4Linked to original sources

Midline cleft. Treatment of the bifid nose.

BACKGROUND: Midline facial clefts are rare deformities with a wide range of clinical findings from a simple midline vermillion notch to major skeletal malformations, including orbital hypertelorism. The bifid nose is a relatively uncommon malformation that is frequently associated with hypertelorbitism and midline clefts of the lip. The presentation of a bifid nose ranges from a minimally noticeable midline nasal tip central groove to a complete clefting of the osteocartilaginous framework, resulting in 2 complete half noses. We describe our experience with 2 patients with midface clefts who presented with bifid noses and a variety of other congenital abnormalities. The anatomy, extensive treatment, and complications of the bifid nose are discussed. DESIGN: Retrospective case review and literature review. RESULTS: Successful creation of an aesthetic nasal contour and normal nasal function was achieved without complication via extensive skin, bony, and cartilaginous resection. CONCLUSIONS: The bifid nose challenges the rhinoplasty surgeon. A successful outcome is dependent on a thorough understanding of the bifid nasal anatomy, proper patient evaluation, careful preoperative planning, and meticulous surgical technique.

Adult↗

Closure of a scalp defect.

In repairing cutaneous defects, the facial plastic and reconstructive surgeon is faced with many specialized areas of tissue. Reconstruction of thin eyelid skin and thick, sebaceous nasal skin requires different methods. The unique characteristics of the scalp make it one of the greatest repair challenges in the head and neck region, sometimes requiring multiple different reconstructive techniques for the same defect.

Adult↗

Decreased splatter in dermabrasion.

OBJECTIVE: To compare a new dermabrasion instrument equipped with a metal shield and hydration-suction apparatus with the standard instrument, with specific attention to the exposure of operating room personnel to potentially hazardous particles. DESIGN: A surgical trial with each of the instruments was performed with a skin model. The splatter caused by the 2 instruments was evaluated and compared statistically and graphically. SUBJECTS: Female hairless guinea pigs (450 g) were used as a skin model. INTERVENTIONS: Ten guinea pigs were treated with the standard dermabrading instrument, and 10 were treated with a shielded suction-irrigating dermabrader. The splatter was analyzed by counting the number of particles landing on strategically placed glass slides. Evaluations of histologic cross-sections of the dermabraded skin were compared in a blinded fashion. RESULTS: Statistical and graphic analysis showed the number of potentially hazardous particles generated by the suction dermabrader to be significantly less than that generated by the standard dermabrader. Histologic sections showed no difference between the 2 subsets. CONCLUSION: The new shielded suction-irrigating dermabrader provides comparable surgical results while significantly decreasing exposure to potentially hazardous splatter particles. Arch Facial Plast Surg. 2000;2:23-26

Animals↗

Free jejunal grafts for reconstruction of pharynx and cervical esophagus.

Reconstruction of the pharynx and cervical esophagus continues to pose a challenge to the surgeon. Over the last 2 years the free jejunal graft with microvascular anastomosis has been used to reconstruct pharyngoesophageal defects in ten consecutive cases with failure in only one case, because of a malfunctioning microscope and a temporary pharyngocutaneous fistula. Eight procedures were performed for reconstruction of a pharyngoesophageal defect after an extensive excision of hypopharyngeal carcinoma, one for pharyngoesophageal defect due to cervical trauma in an accident, and another for corrosive atresia. In seven of these cases the unaffected larynx or normal part of the larynx was simultaneously preserved and reconstructed with laryngeal function restored totally in four cases and partially in three cases. The techniques of both pharyngoesophageal and laryngeal reconstruction are presented. In our experience this is a relatively safe and reliable single-staged procedure that provides easier and earlier rehabilitation compared to other methods of reconstruction. Furthermore, the majority of patients may have their larynges rehabilitated simultaneously.

Esophagus↗