[Diagnosis and treatments for recurrent malignant tumors involving the carotid artery].

Objective: To study the diagnosis and treatment of the malignant tumor involving carotid artery.

Methods: A total of 23 cases of recurrent malignant tumors involving the carotid artery were included in this study. For the primary cancers, 8 of 23 cases were laryngeal carcinomas, 10 hypopharyngeal carcinomas, 2 thyroid carcinomas, 1 tonsil carcinoma, 1 parotid gland carcinoma, and 1 hypopharyngeal sarcoma with the invasion of cervical esophagus.

[Swallowing and laryngeal function preserving in surgical treatment of the head and neck tumors involving the tongue root].

Objective: To investigate the surgical technique which could preserve the swallowing and laryngeal function effectively in the malignant head and neck tumors involving the tongue root.

Methods: From January 2003 to December 2008, 31 cases of malignant head and neck tumors involving the tongue base had been treated in this hospital were retrospectively analyzed. There were 27 males and 4 females in which 9 cases of primary malignant tumor were from the base of tongue; 3 cases were from the tonsil, 11 cases were from supraglottic laryngeal carcinoma and 8 cases were from hypopharyngeal carcinoma.

[Anatomical landmarks of skull base and safety of the skull base surgery].

Objective: In order to improve the safety of skull base surgery and to completely resect the skull base tumors, the anatomical landmarks of skull base were studied.

Methods: 29 cases of skull base surgery were performed between 1992 and 2002, and their clinical data were retrospectively analysed. The anatomical landmarks of cranial base, such as comb, pterygoid process, spine of temporal bone, styloid process, and internal caroid artery, were analysed in preoperative diagnosis and operative treatment of various kinds of skull base tumors.