Ultrastructural localization of salivary mucins MUC5B and MUC7 in human labial glands.

As a result of their presence throughout the mouth in the submucosa or between muscle fibers, minor salivary glands secrete directly and continuously into the oral cavity, providing mucosal surfaces with highly glycosylated proteins that are active in bacterial aggregation and in oral tissue lubrication. In this study, we investigated the ultrastructural localization of the MUC5B and MUC7 mucins in human labial glands by means of a postembedding immunogold technique. Thin sections of normal human labial glands, obtained during surgery, were incubated with polyclonal antibodies to human salivary mucins MUC5B and MUC7, and then with gold-labeled secondary antibodies. Specific MUC5B reactivity was found in the secretory granules of mucous cells of all glands examined, and was associated with the luminal membrane of duct cells. MUC7 labeling was observed in the granules of both mucous and seromucous secretory cells of the glandular parenchyma. Quantitative analyses demonstrated that seromucous granules have higher immunogold labeling densities for MUC7 than mucous granules. Our immunohistochemical data extend the results of previous light microscopic studies of MUC5B and MUC7 localizations, pointing out the significant contribution of human labial glands in the secretion process of these two mucins.

Carbon dioxide laser-assisted phonosurgery for benign glottic lesions.

The objectives of the study were (1) to evaluate glottic function following carbon dioxide laser-assisted phonosurgery of benign laryngeal disease, and (2) to assess postoperative glottic morphology and disease recurrence rates, using the study design of comparative prospective non-randomized case series of patients with benign glottic pathology treated by laser-assisted phonosurgery over 10 years. 235 consecutive patients had pre- and postoperative data collected by objective laryngeal examination, videostroboscopy recording of vocal fold mucosal wave movement, electroacoustic voice analysis (statistical analysis: Wilcoxon test) and perceptual voice evaluation. Comparing pre- and postoperative functional results demonstrated a statistically significant improvement in all spectrographically analysed objective voice parameters (P < 0.001). Postoperative morphological analysis confirmed three recurrences of granuloma and one of Reinke's oedema. Carbon dioxide laser-assisted voice restoration for benign glottic disease is effective.

Lobular capillary hemangioma of the nasal cavity: A retrospective study on 40 patients.

BACKGROUND: Nasal lobular capillary hemangioma (LCH) is a benign lesion of unknown etiology that must be included in the differential diagnosis of vascular lesions. Based on a large cohort of LCH patients, we retrospectively analyzed the clinical presentation, histological and radiological findings, and the treatment strategy. METHODS: Clinical records of 40 patients affected by LCH, treated in a 20-year period at two university hospitals, were reviewed. Data concerning symptoms, possible etiologic factors, endoscopic findings, imaging studies, and treatment were collected. RESULTS: Previous nasal trauma and pregnancy were identified as possible causes in six (15%) and two (5%) patients, respectively. The main symptoms were unilateral epistaxis (95%) and nasal obstruction (35%). Lesions ranged in size from 1 to 8 cm and mainly involved the nasal septum (45%) and the nasal vestibule (17.5%). In the four (10%) patients with a large lesion, radiological evaluation was helpful not only in assessing the extent, but also in suggesting the possible nature of the lesion. All patients underwent endoscopic resection under local (72.5%) or general (27.5%) anesthesia. At mean follow-up time of 53 months, no recurrence has been observed. CONCLUSION: To the best of our knowledge, this is the largest series of patients with nasal LCH. When the mass is considerable in size, differentiation from other hypervascularized lesions may be intriguing. Under these circumstances, information obtained with imaging may sometimes suggest a correct diagnosis without resorting to biopsy. Endoscopic surgery is the treatment of choice even for large lesions, that do not require preoperative embolization.

Functional outcomes after CO2 laser treatment of early glottic carcinoma.

OBJECTIVES: To analyze vocal outcome after endoscopic CO2 laser treatment of early glottic carcinoma by perceptive and objective assessment. STUDY DESIGN: Retrospective study. METHODS: Retrospective analysis of 141 consecutive patients undergoing surgery for previously untreated early glottic carcinoma between October 1993 and July 2003. Five types of laser cordectomies as classified by the European Laryngological Society classification were performed. Comparison of voice results between the different types of cordectomies as well as with a control group was performed. RESULTS: There was no significant difference in the vocal parameters between subepithelial and subligamental cordectomies and controls (P > .05). There was, however, a significant difference between the groups of transmuscular, total, and extended cordectomies and controls (P < .05). CONCLUSIONS: Good oncologic results and vocal outcomes with no difference between controls and subepithelial and subligamental cordectomies support the use of CO2 laser endoscopic surgery as the first line of treatment for early glottic cancer.

Carbon dioxide laser microsurgery for early glottic carcinoma.

OBJECTIVES: To define the oncologic efficacy of transoral endoscopic CO2 laser surgery in early glottic carcinoma. METHODS: A retrospective study of 103 patients with glottic carcinoma (14 Tis, 68 pT1a, 14 pT1b, and 7 pT2) treated from October 1993 to June 2001. Surgical treatment included endoscopic CO2 laser cordectomies according to the classification of the European Laryngological Society. RESULTS: According to the Kaplan-Meier method, the probability of remaining free of local recurrence 5 years after primary surgery alone was 100% for the Tis, 96.05% for the T1, and 100% for the T2. Local control at 5 years after exclusive CO2 laser salvage surgery was 98.03%. The probability of remaining free of local recurrence 5 years after any type of salvage surgery was 100%. Laryngeal preservation was achieved in 100% of the cases. CONCLUSIONS: According to the present series, endoscopic CO2 laser surgery is an effective treatment for early glottic cancer. EBM RATING: C-4.

Free-flap iliac crest in mandibular reconstruction following segmental mandibulectomy for squamous cell carcinoma of the oral cavity.

The aim of the study was to asses the anatomic and functional results and quality of life of a cohort of patients submitted to immediate reconstruction with the iliac osteomusculocutaneous free flap following composite resection for carcinoma of the oral cavity. Twelve patients affected by squamous cell carcinoma of the oral cavity were submitted to a single surgical procedure that included a segmental mandibulectomy in a composite resection, followed by primary reconstruction using a vascularized bone-containing free flap of the iliac crest. Reconstruction failed in one patient. Functional results as well as quality of life of 10/12 patients were evaluated using the Performance Status Scale and Functional Assessment Cancer Therapy General Scale questionnaires, appropriately modified for the pathology. The results were compared with those obtained in a group of five patients who underwent composite resection for oral carcinoma without mandibular reconstruction. Patients submitted to reconstruction noted a greater physical well being (score 22/78% vs. 16/53%; max. 28/100%), socio-family relationships (score 23/81% vs. 18/64%; max. 28/100%), emotional (score 18/90% vs. 14/70%; max. 20/100%) and general functional well-being (score 24/86% vs. 14/50%; max. 28/100%). Better recovery in functional mastication and swallowing was also observed (score 17/70% vs. 9/37%; max. 24/100%). A follow-up of longer than 6 months showed minimal donor site morbidity.

Carbon dioxide laser salvage surgery after radiotherapy failure in T1 and T2 glottic carcinoma.

OBJECTIVES: Recurrent glottic carcinoma after radiotherapy (RT) may be managed by open neck or endoscopic surgery. The impact of endoscopic treatment with CO(2) laser for recurrent glottic carcinoma after RT is reported. METHODS: We present the oncologic and vocal outcomes of a retrospective study based on a series of 16 patients with rT1 and rT2 glottic carcinoma who were endoscopically managed between February 1995 and December 1999 after RT failure. All patients were males with a mean age of 68.7 years (range, 50 to 87 years). Before RT, the lesions had been staged as T1 N0 in 11 patients and T2 N0 in 5, and after RT as rT1 N0 in 12 and rT2 N0 in 4. According to the European Laryngological Society classification, a total of 9 transmuscular, 3 total, and 4 extended cordectomies were performed. Mean follow-up was 45 months (range, 9 to 79 months). RESULTS: Endoscopic salvage surgery was successful in 14 patients. One of them developed a second recurrence and was definitively cured with an additional endoscopic procedure. Two of the 16 patients had recurrent disease after salvage laser surgery and died due to progression of disease. Ultimate local control with laser alone at 3 years was 87.1%, according to the Kaplan-Meier method. Laryngeal preservation was obtained in all survivors after endoscopic rescue surgery. Voice analysis showed a clear correlation between the amount of vocal cord tissue resected and decrease of the vocal outcome. CONCLUSIONS: The present series indicates that selected recurrences after primary RT for T1 and T2 glottic carcinoma are eligible for endoscopic salvage surgery with oncologic results comparable to those with open neck procedures but with a lower complication rate and a favorable functional outcome.