OBJECTIVE: To describe a patient with polyp antrochoanal and literature review. CASE REPORT: A male patient, 11 years old, coming from Caazugu, Paraguay, who consulted the department of otolaryngology of the Clinical Hospital of the FCM - UNA with a history of 6 months of developing tumors in the left nasal cavity, insidious growth, painful bloody, on the occasion, as well as unilateral nasal obstruction, snoring, mouth breathing. He denies similar frames, adenoidectomy at 6 years old. CONCLUSION: The antrochoanal polyp is a benign disease of youth, his initial symptom is nasal obstruction, as noted in the patient, is characterized by a tumor that arises from the middle meatus maxillary sinus sometimes protruding in the nasal cavity and oropharynx. : its diagnosis extension are carried out by TAC and RMN; treatment is endoscopic surgery, which was used in this case, sometimes it is combined with the Luc Caldwell in the case of larger tumoral masses.