Faculty Bibliography

PURPOSE: Head and neck neoplasms requiring surgical resection of the mandible can have negative consequences on patient quality of life. For patients with segmental resections, the vascularized fibular free flap and nonvascularized iliac crest are frequently used. The fibula has surpassed the iliac crest in popularity due to the success associated with a vascularized graft; however, there still remain significant advantages with the nonvascularized graft. There has not been a study comparing the quality of life associated with these two methods of mandibular reconstruction. We carried out the following study to compare quality of life of both grafts in an attempt to help guide therapeutic decisions. PATIENTS AND METHODS: Twenty-nine patients at the University of California, San Francisco undergoing mandibular resection with subsequent reconstruction with either a vascularized fibular free flap or nonvascularized iliac crest bone graft were identified. Patient quality of life was assessed with a modified version of the University of Washington Quality of Life Questionnaire, version 4. RESULTS: Eighteen patients responded (10 reconstructed previously with a fibula, 8 with iliac crest reconstructions). Patients with an iliac crest bone graft had significantly better chewing and swallowing scores (P = .04, P = .049 respectively). There was also a trend for better taste (P = .067). When patients with a history of radiation therapy were excluded, differences in chewing and swallowing were not significant (P = .26 and P = .31 respectively), whereas taste was (P = .038). CONCLUSIONS: These findings suggest that reconstruction with the iliac crest had benefits in improved function (chewing, swallowing, and taste) rather than esthetics, donor site morbidity, or psychologic discomfort as was anticipated. However, prior radiation, a relatively frequent therapy in this patient population, presents an important confounding factor. Radiation therapy is difficult to control for without limiting an already scarce patient pool, and bears with it significant morbidity that likely influenced these findings. Further study is warranted to confirm the results and further distinguish the 2 groups

Oral squamous cell carcinoma (SCC) has an unpredictable capacity to metastasize to the neck, an event that dramatically worsens prognosis. Metastasis occurs even in earlier stages when no neck lymph node involvement is clinically detectable (N0). Management of the N0 neck, namely when and how to electively treat, has been debated extensively. This article presents the controversies surrounding management of the N0 neck, and the benefits and pitfalls of different approaches used in evaluation and treatment. As current methods of assessing the risk for occult metastasis are insufficiently accurate and prone to underestimation of actual risk, and because selective neck dissection (SND) is an effective treatment and has minimal long-term detriment to quality of life, the authors believe that all patients who have oral SCC, excluding lip SCC, should be prescribed elective treatment of the neck lymphatics. However, this opinion remains controversial. Because of the morbidity of radiation therapy and because treatment of the primary tumor is surgical, elective neck dissection is the preferred treatment. In deciding the extent of the neck dissection, several retrospective studies and one randomized clinical trial have shown SND of levels I through III to be highly efficacious

In this study, we investigated the role of the peripheral endothelin-1 (ET-1) concentration in a cancer pain model. To test the hypothesis that the concentration of ET-1 in the tumor microenvironment is important in determining the level of cancer pain we used two cancer pain mouse models that differed significantly in production of ET-1. The two mouse cancer models were produced by injection of cells derived from a human oral squamous cell carcinoma (SCC) and melanoma into the hind paw of female mice. Pain, as indicated by reduction in withdrawal thresholds in response to mechanical stimulation, was significantly greater in the SCC group than the melanoma group. The peripheral concentration of ET-1 within the cancer microenvironment was significantly greater in the SCC group. Intra-tumor expression of both ET-1 mRNA and ET-1 protein were significantly higher in the SCC model compared to the melanoma model. ET receptor antagonism was effective as an analgesic for cancer pain in the SCC model only. To address the potential confounding factor of tumor volume we evaluated the contribution of tumor volume to cancer pain in the two models. The mean volumes of the tumors in the melanoma group were significantly greater than the tumors in the SCC group. In both groups, the pain level correlated with tumor volume, but the correlation was stronger in the melanoma group. We conclude that ET-1 concentration is a determinant of the level of pain in a cancer pain mouse model and it is a more important factor than tumor volume in producing cancer pain. These results suggest that future treatment regimens for cancer pain directed at ET-1 receptor antagonism show promise and may be tumor type specific

PURPOSE: Squamous cell carcinomas of the hard palate, maxillary gingiva, and maxillary alveolus occur at relatively low rates compared with squamous cell carcinomas in other oral sites. There is little within the surgical literature to guide treatment for maxillary squamous cell carcinoma. To date, only 1 other group has addressed neck management in the oral maxillary squamous cell carcinoma patient presenting with a clinically negative neck. Adequate characterization of maxillary gingival carcinoma behavior with respect to regional cervical metastasis is wanting. PATIENTS AND METHODS: We present a retrospective review of our own clinical experience as well as a review of the existing literature. RESULTS: In our University of California San Francisco patient group, cervical disease was detected in 20% of those individuals with maxillary squamous cell carcinoma presenting for initial consultation. After ablative surgery, those individuals who presented with clinically negative necks had a 21.4% rate of regional node metastasis. Ultimately, 50% of our patients with squamous cell carcinomas of the palate, maxillary gingiva, and maxillary alveolus developed regional or metastatic distant disease; 42.9% of the patients manifested disease to the cervical lymph nodes alone. CONCLUSIONS: The cases of oral maxillary squamous cell carcinomas reviewed herein exhibit aggressive regional metastatic behavior comparable to that of such carcinomas of the tongue, floor of the mouth, and mandibular gingiva. Based on the findings presented herein, we recommend selective neck dissection in the setting of a clinically negative neck as a primary management strategy for patients with oral maxillary squamous cell carcinomas involving the palate, maxillary gingiva, and maxillary alveolus

We investigated the cannabinoid receptor (CBr) agonists Win55,212-2 (non-selective) and AM1241 (CBr2 selective) and the peripheral receptor (CBr1) in carcinoma-induced pain using a mouse model. Tumors were induced in the hind paw of female mice by local injection of a human oral squamous cell carcinoma (SCC). Significant pain, as indicated by reduction in withdrawal thresholds in response to mechanical stimulation, began at 4 days after SCC inoculation and lasted to 18 days. Local administration of Win55,212-2 (10 mg/kg) and AM1241 (10 mg/kg) significantly elevated withdrawal thresholds, indicating an antinociceptive effect. Ipsilateral expression of CBr1 protein in L5 DRG was significantly upregulated compared to ipsilateral L4 DRG and in normal tissue. These findings support the suggestion that cannabinoids are capable of producing antinociception in carcinoma-induced pain

BACKGROUND: Several unique complications of thyroidectomy exist because of its regional anatomy; they are well studied and reported. A majority of thyroidectomy patients report vague upper aerodigestive tract complaints. Despite this, no formal assessment of the integrity of the internal branch of the superior laryngeal nerve after thyroidectomy exists in the literature. METHODS: Thirty three patients undergoing thyroidectomy were prospectively evaluated with preoperative and postoperative laryngopharyngeal sensory testing. RESULTS: Preoperatively, 16 patients (49%) reported dysphagia, and 19 (58%) complained of globus sensation. Postoperatively, 24 (73%) patients complained of dysphagia, and 25 (76%) reported globus sensation. Preoperative sensory testing showed a mean sensory threshold of 2.79 +/- 0.51 mm Hg. The mean change in thresholds postoperatively was trivial (0.07 +/- 0.29 mm Hg), and did not differ significantly from zero (p = .19). CONCLUSIONS: Although most patients report significant difficulty swallowing after thyroidectomy, the sensory nerve to the laryngopharynx remains intact and is not at risk during thyroid surgery

OBJECTIVES: To provide comprehensive temporal trend analysis of 5-year relative survival rates of laryngeal cancer using the Surveillance, Epidemiology, and End Results database; and to expand on prior reports by including inclusion of laryngeal tumor location, stage, age at diagnosis, treatment strategy, and histologic grade. DESIGN: Retrospective cohort analysis using the Surveillance, Epidemiology, and End Results database of the National Cancer Institute. The Surveillance, Epidemiology, and End Results data were used to design 5 cohorts of patients with laryngeal cancer: 1977-1978, 1983-1984, 1989-1990, 1995-1996, and 2001-2002. Five-year survival rates were analyzed according to tumor site, stage, and grade; age at diagnosis; and treatment strategy. The joinpoint regression model was used to assess survival trends and their statistical significance. RESULTS: Among patients with supraglottic cancer, 5-year relative survival rates for distant disease worsened over time while rates for local and regional disease did not change (P = .01 and P > .05, respectively). For localized glottic cancer, survival remained stable from 1977-1978 to 2001-2002. However, patients with regional and distant glottic cancer demonstrated a significant decrease in survival in the past 3 decades (P < .001). This trend was independent of treatment strategy. Finally, the proportion of well-differentiated tumors in patients with regional laryngeal cancer decreased over time (P < .001 for supraglottic and P = .007 for glottic). CONCLUSIONS: A decreasing 5-year survival trend was found among patients with glottic cancer who had regional disease and in all patients with distant disease. Histopathologic trends not previously reported in those with laryngeal cancer seem to parallel those seen in other tobacco-related cancers. These trends may reflect the effect of birth cohorts and implicate the relationship between carcinogenic exposure and host factors, rather than the influence of treatment

The purpose of this article is to discuss the most significant oral health and related problems experienced by women, and to provide a Nurse's Plan of Action to respond to these largely preventable diseases. Oral health is integral to women's overall health and well-being, with poor oral health being associated with cancer, heart disease, diabetes, depression, and the birth of preterm, low-birthweight babies. Poor nutrition and lifestyle, principally tobacco and heavy alcohol use, can further increase the risk for oral diseases. Disparities are evident in women's reported poor access of regular dental care related to lack of dental insurance and low income. These facts are disturbing because most oral diseases are preventable. The Surgeon General's report on oral health in America (U.S. Department of Health and Human Services, 2000) and, more recently, the 'National Call to Action to Promote Oral Health' (U.S. Department of Health and Human Services, 2003) emphasized the need for partnerships of key stakeholders, including nurses, to get involved in oral disease prevention. Nurses are in an ideal position to provide health promotion education and screening across the multitude of settings in which they work regarding oral health and risk factors for oral disease. Nursing interventions aimed at promoting healthy outcomes and preventing disease should include a focus on oral health