Factors influencing Frey syndrome after parotidectomy with acellular dermal matrix

BACKGROUND Frey syndrome,also known as ototemporal nerve syndrome or gustatory sweating syndrome,is one of the most common complications of parotid gland surgery.This condition is characterized by abnormal sensations in the facial skin accompanied by episodes of flushing and sweating triggered by cognitive processes,visual stimuli,or eating.AIM To investigate the preventive effect of acellular dermal matrix(ADM)on Frey syndrome after parotid tumor resection and analyzed the effects of Frey syndrome across various surgical methods and other factors involved in parotid tumor resection.METHODS Retrospective data from 82 patients were analyzed to assess the correlation between sex,age,resection sample size,operation time,operation mode,ADM usage,and occurrence of postoperative Frey syndrome.RESULTS Among the 82 patients,the incidence of Frey syndrome was 56.1%.There were no significant differences in sex,age,or operation time between the two groups(P>0.05).However,there was a significant difference between ADM implantation and occurrence of Frey syndrome(P<0.05).ADM application could reduce the variation in the incidence of Frey syndrome across different operation modes.CONCLUSION ADM can effectively prevent Frey syndrome and delay its onset.

Indications and Results of Parotidectomies in the Orl Department of the Idrissa Pouye General Hospital in Dakar. Concerning 31 Cases

Introduction: The parotid tumors are benign or malignant, primary or secondary neoformations developed at the expense of the parotid gland. The aim of the present study was to describe the indications and results of parotidectomies in the ENT department of the Idrissa Pouye General Hospital in Dakar. Patients & Methods: We conducted a retrospective study between January 1, 2004 and December 31, 2012, including all patients who had been consulted for a parotid tumor with or without histological evidence collected in the otolaryngology and anatomy-pathology department of the Idrissa Pouye General Hospital in Dakar. Results: We collected 31 patient files. The mean age was 47.45 years, with extremes of 16 and 74 years. Females predominated, with a sex ratio of 0.82. Swelling of the parotid region was the main reason for consultation in 100% of cases. Parotidectomy was the most frequently performed procedure, accounting for 41.93%. Benign tumors accounted for 72% of cases, the majority being pleomorphic adenomas (50%). The outcome was favorable in 67.74% of cases. Conclusion: Management of parotid tumors at HOGIP would be improved by informing and educating patients to consult early, and by upgrading the technical platform.

Flow Cytometric Analysis of DNA Content in Parotid Tumor and Its Contiguous Acini

Summary: To investigate the relationship between proliferative capacity of salivary gland cells in contiguous acini of parotid tumors and recurrent neoplasma, DNA contents of 30 fresh specimens of parotid were studied by using cytometry in tumors, normal and shallow or deep lobe acini of the masses. The results showed that the DI was 1. 369, S % 16. 95, PI 26. 18 in malignant tumors; DI was 1. 171, S % 12. 41, PI 15. 54 in recurrent pleomorphic adenoma; DI was 1. 141, S % 12. 74, PI 13. 07 in pleornorphic adenoma, DI was 0. 999, S % 5. 10, PI 8. 00 in normal acini. Analysis of variance showed there was a significant difference (P<0. 01 ). The average DNA contents of shallow on deep lobe of contiguous tumors was 1. 08 in DI, 10. 65 in S %, 13. 49 in PI in malignant tumor, 1. 06 in DI, 8. 96 in S % and 9. 85 in PI in pleomorphic adenoma, which were all higher than in normal acini (P>0. 05). It was concluded that the levels of DI and S % of parotid tumor and its contiguous acini are related to degree of malignancy or recurrent condition of the tumors, suggesting contiguous acini of parotid tumors had the strong capacity of proliferation, which might play an important role in recurrent or malignant change of the parotid tumors.

DIAGNOSTIC ULTRASOUND IMAGING OF PAROTID TUMOR

Sonography was performed on 104 cases with parotid tumors. The shape, boundary and internal echoes were related to the malignancy of the tumor. The diagnostic criteria of parotid tumors were proposed. The sonograms of 32 surgical specimens of parotid tumors were compared with histopathologic findings to investigate the pathologic bases of various sonograms. The boundary echoes were related to integrity of the capsule of the tumor. The internal echoes were related to internal structures of the tumor.