[Papillary cystadenocarcinoma of the salivary glands: clinicopathologic analysis of 22 cases].

A clinicopathologic observation of 22 cases of papillary cystadenocarcinoma of the salivary glands was made. Of these, 17 cases were males and 5 females. The average age of the patients was 37.1 years, with a range of 17 to 61 years. The mean duration of the disease was about four years. The majority of the carcinoma were located in parotid (72.7%). Histopathologically, they were classified by the authors into two types, that is, well-differentiated type and poorly-differentiated type. The results showed that recurrence and metastasis of lymph nodes of the tumour were closely related to the degree of their differentiation.