Papillary cystadenocarcinoma of the salivary gland is a very rare malignant neoplasm accounting for only 2% of all salivary gland lesions. In 1991 it was first included as a separate entity in the World Health Organization (WHO) classification of salivary gland tumors and in 2017 WHO Classification. the tumor was clubbed as a sub-variant of adenocarcinoma. not otherwise specified. https://etdurbxsw9bw6.timeblog.net/70682897/integrando-a-história-oral-e-as-narrativas-a-abordagens-pedagógicas-problematizadoras-na-formação-inicial-de-professores-de-matemática