Primary Parapharyngeal Space Tumors: Case SeriesJulide Kasaboglu 1, Tsvetomir Marinov2 , Milena Mitkova 1 , Spiridon Todorov 1 ,Julian Rangachev 11 Department of ENT, University Hospital “Queen Joanna” - ISUL, Medical University of Sofia2 Department of Anaesthesiology and Intensive Care, University Hospital “Queen Joanna” - ISUL, Medical University of Sofia.