OBJECTIVE: To describe a patient with antrochoanal and literature review. Clinical case: a female patient, 9 years old with under nine months of development of unilateral nasal obstruction, purulent rhinorrhea accompanied by further growth of tumor fetid, grayish white protruding at the right nasal vestibule hanging from it, also on two occasions epistaxis and nasal voice for three months, physical examination noted aspect grayish white tumor arising in the right nasal cavity, fetid purulent rhinorrhea, both anterior and posterior soft bombed palate at the expense of polypoid tumor of descending from reaches the nasopharynx and oropharynx TAC nose and paranasal sines: maxillary sinus tumor occupying the left nasal cavity and left leaving the maxillary sinus apparently DESIGNS by middle meatus and oropharynx excerese is done the same with curettage of the walls of said sine, pathological anatomy confirms the suspicion antrochoanal; in controls later the patient presented a good clinical development without recurrence. CONCLUSION: The CAP is a tumor disease of youth, their main symptoms were obstruction, occasional epistaxis and nasal tumor, the treatment of choice is endoscopic excerese a more accurate extraction of base-level deployment of the affected sinus using the combined approach front of large tumors and recurrences.