Publications by authors named "Takeshi Tochizawa"
Objective: High-grade parotid carcinoma generally has a poor prognosis, and the histological type is mucoepidermoid carcinoma (MEC), salivary duct carcinoma (SDC), carcinoma ex pleomorphic adenoma (CEPA), or adenoid cystic carcinoma (AdCC) in the majority of cases.
Methods: During the 23-year period from September 1999 to December 2022, 250 patients with parotid carcinoma underwent initial treatment and had the histopathological type of their carcinoma. Retrospective study evaluated 111 MEC, SDC, CEPA, or AdCC cases among 134 patients with high-grade parotid carcinoma.
Objective: Facial nerve paralysis is the most problematic complication of surgery for parotid tumors. This study aimed to examine the progress of recovery from postoperative transient facial nerve paralysis (POFNP).
Methods: Participants were 203 patients who developed POFNP after benign parotid surgery.
Article Synopsis
- Researchers aimed to create a new classification system for benign parotid tumors that links tumor location to the risk of postoperative facial nerve paralysis, a common complication after surgery.
- They divided the parotid gland into six portions and combined them to establish eight specific tumor locations, using this categorization to analyze data from 948 patients.
- Their findings revealed that pleomorphic adenomas were more prevalent in the upper gland and that tumors in deeper locations significantly increased the risk of facial nerve paralysis post-surgery.
Purpose: This study investigated the characteristics, diagnosis, and treatment of Warthin tumors (WTs) to explore the possibility of managing patients by observation.
Methods: We reviewed the records of 1167 patients with benign parotid tumors who were seen in our department between September 1999 and April 2021. Among them, 387 cases were WT and 668 cases were pleomorphic adenoma.
Objective: The aim of this study was to evaluate the rate of postoperative facial palsy in benign parotid tumors, as well as its risk factors, pathology, and clinical results.
Study Design: Retrospective analysis.
Methods: We performed a retrospective analysis of data from patients whose initial operation for a benign parotid tumor had been performed in our department between 1999 and 2020.