The following diseases cause nasopharyngeal bulges: 1. Adenoid hypertrophy, mainly in children, which is manifested as an orange flap-like bulge in the nasopharynx and may cause snoring and open-mouth breathing in children. 2. Nasopharyngeal carcinoma, which occurs unilaterally, patients can see ulcers, erosions and hyperplasia-like changes in the nasopharynx, and clinically patients can show early manifestations of secretory otitis media, and can also develop submandibular lymph node enlargement. 3. 3. nasopharyngeal lymphoma, which is usually a diffuse lymphatic tissue hyperplasia in the nasopharynx and requires local biopsy to obtain pathology to confirm the diagnosis. 4. nasopharyngeal fibrovascular tumor, which mainly occurs in young people, can be seen clinically as a smooth nasopharyngeal neoplasm with a rich vascular texture on the surface. The diagnosis can be confirmed by MRI with enhancement.