👉 Perilymphangioma is a benign tumor of the perilymphatic system, which includes the lymph nodes and other organs. It is characterized by the presence of numerous blood vessels in the perilymph tissue, known as perilymphangiomas. These tumors are often found in the neck region, particularly on the shoulders or under the armpits. They can cause symptoms such as swelling, pain, and difficulty breathing due to their location near the heart and lungs. Treatment options for per