Growth rates over time of unoperated parotid benign tumors.

INTRODUCTION: The treatment of parotid benign tumor is in principle surgery, but observation may be necessary in some cases. The purpose of this study was to investigate the growth rates over time of unoperated parotid benign tumors. METHODS: We retrospectively reviewed the medical records of 63 patients with unoperated parotid benign tumors diagnosed at our institution between January 2010 and December 2022. RESULTS: Forty-nine of the 63 patients had a Warthin tumor and 13 patients had a pleomorphic adenoma. On average, the unoperated parotid benign tumors grew 0.02 cm in length and 0.4 cm3 in volume per year. Compared to pleomorphic adenomas, Warthin tumors were more predominant in male patients and in those with a smoking history and a longer duration of smoking history; patients with Warthin tumors were also followed up longer (p < 0.05). However, the length and volume growth rates of unoperated Warthin tumors and pleomorphic adenomas did not significantly differ. CONCLUSION: Surgery is the standard treatment for parotid benign tumors. However, small benign parotid tumors identified during preoperative examination can be observed through close follow-up, taking into account the patient's medical and general condition.

Clinical features and recurrence factors of benign neoplasms of the tongue base.

INTRODUCTION: Neoplasms of the tongue base are rare, but they range from benign neoplasms to congenital diseases and malignant neoplasms. The purpose of this study is to analyze the clinical features and recurrence factors of benign tumors of the tongue base. METHODS: The study included 27 cases of benign neoplasms of the tongue base from January 2010 to February 2022. RESULTS: Of these 27 patients, 19 were male and 8 were female. Most cases were found incidentally without any specific symptoms, and squamous papilloma was the most common tumor. We performed microscopic or endoscopic transoral resection of benign neoplasms of the tongue base under general anesthesia in all patients without any complications. The recurrence rate was 14.8%, and we found that the younger the patient, the higher the recurrence rate (p < 0.001). CONCLUSION: We performed transoral resection of benign neoplasms of the tongue base in all patients without any complications. The recurrence of benign neoplasms of the tongue base was statistically significant only in terms of age.