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In some cancers with a high antigenicity (gastric, intestinal, mammary, laryngeal, etc.) the authors associated to the classical treatment an autovaccine prepared by combining the tumoral extract (obtained by trituration, sonication and centrifugation, and stored at -80 degrees C) with some mitogens (phytohemagglutinin) and adjuvants (ovalbumin, tuberculin, lymphocyte promotion factor, etc.) obtaining a greater survival (4-6 years). The association of viruses with an oncolytic action (mumps virus) to the active unspecific immunotherapy in some cancerous structures (peritoneal, pleuropulmonary and synovial malignant mesothelioma, malignant cholangioma of the liver, hepatic metastases of some adenocarcinomas of the colon, gastric cirrhous, clearly differentiated macrocellular carcinomas of the lung, pulmonary mucoid adenocarcinomas, traditional recurrent carcinomas of the urinary bladder), in which all other oncotherapeutic resources have been exhausted, induced slow involution up to disappearance of the tumor and a favourable evolution of the patients without signs-of recurrence after 5-7 years in 73% of cases. To obtain the expected results it is mandatory to comply strictly with certain principles, established by the authors for each of the two original methods, expounded in detail in the text.