Abstract: Objective: To investigate the clinical manifestations and imaging characteristics of parotid secretory carcinoma. Methods: The clinical data of patients with parotid secretory carcinoma who were treated in the First Affiliated Hospital of Zhengzhou University from January 2017 to October 2020 were retrospectively analyzed. The clinical manifestations and imaging characteristics of the patients were analyzed. Results: Ten patients, 5 males and 5 females, were included in the study. The onset age was 2-68 years old, including 2 children and 1 adolescent, with an average age of 38.5 years old. The maximum diameter of the tumor was 2.5-4.8 cm. Most of the lesions accumulated in the superficial and deep lobe of the parotid gland, with medium to hard texture, clear boundary, and poor activity. The clinical manifestations were gradual growth of pailess tumor. B-ultrasound showed clear boundary cystic solid lesions, mainly cystic lesions. There was no obvious blood flow signal (5/7). CT showed that the lesions were shallow lobulated, and were heterogeneous enhanced after enhancement. Cystic low-density areas and nodular images were visible with clear boundary (6/7). MRI showed round or nodular, long T1 and T2 signal, high signal on fat pressure image, low signal on ADC. The cystic components showed high signal on T1 weighted imaging and T2 weighted imaging. The solid component showed low signal intensity (4/4). Conclusion: Secretory carcinoma of parotid gland is a rare low-grade malignant salivary gland tumor. Its clinical manifestations and imaging characteristics provide a basis for the preoperative diagnosis of parotid secretory carcinoma.

Key words: recretory carcinoma, parotid, clinical manifestations, imaging characteristics