The case in our report was a 63-year-old woman farmer of the Han race who is 1.6-m in height and 40-kg in weight. The patient was admitted to our hospital with a growing mass in her upper jaw. The tumor developed over a period of 4 mo and was still growing slowly. The patient did not present with any pain or any sensory loss in the affected area. She did report discomfort in the upper jaw while eating, which impaired her diet. She denied trauma at the site. Her medical history revealed chronic nephritis, bilateral submandibular lymphadenectomy and weight loss. No other comorbidities or relevant diseases were observed in her family. Physical examination discovered a red, intact mass that involved nearly the entire soft palate. The tumor exhibited bilateral symmetry in the upper jaw. The patient’s oral hygiene was poor, with missing teeth in regions 31-32, 35-36, 38, 45-46, and 48. The absolute value of eosinophils was 2.94 × 109/L, and the percentage of eosinophils was 39.50%. Blood tests indicated elevated peripheral blood eosinophilia. Renal function was normal without eosinophilia. A magnetic resonance imaging (MRI) scan revealed a tumor in the upper jaw with bilateral symmetry and a size of 5 cm × 2 cm. The soft palate was enlarged and the palatine tonsils exhibited swelling to the third degree. The tumor had a high retention of contrast agent although it did not appear to be a hemangioma. The tumor mainly infiltrated the soft tissue, without osseous destruction. There were enlarged cervical lymph nodes on both sides with multiple nodes between 1 and 2 cm in diameter. They were identifiable and symmetrical without suspicion of metastasis. The findings from radiology are consistent with a malignant lymphoma or sarcoma. A subsequent computed tomography (CT) was used to visualize the lesion. Following contrast agent administration, the tumor was not enhanced compared to the adjacent tissues and it appeared hypodense. The cervical vessels appeared normal and had no obvious connection with the tumor. The lymph nodes failed to show characteristics of metastases. The CT results were consistent with a sarcoma or with a malignant lymphoma. Further examination of the patient failed to find evidence of any distant metastatic sites. A biopsy of the mass was performed after the patient was referred to our group, and the lesion was diagnosed as a benign tumor. We recommended cervical lymph node puncture and partial surgical excision of the lesion. Cervical lymph node biopsy by puncture showed visible lymphocytes. With the help of the Davis' opener, we removed part of the tumor located in the left soft palate. After complete hemostasis, the wound was packed with gauze and wrapped under pressure. Multiple biopsies were performed during surgery, and examined after immediate sectioning. The results of histology and immunohistochemistry were consistent with angiomatosis with an inflammatory pseudotumor and many eosinophil cells. We found no evidence of malignancy. Final histopathologic examination diagnosed angiomatosis with inflammatory cells.