If your child has a cervical lymphatic duct malformation, you are worried and anxious, but you don’t know what to do, what tests your child should undergo and what treatment he or she should receive next. I sincerely hope this article will help you. When you bring your child to the hospital, our doctor will first take a detailed history of your child. The doctor will ask how long the child has had the symptoms, and whether the swelling is growing quickly or slowly. Are there any pain and recurrent infections, hoarseness, breathing difficulties, swallowing difficulties, saliva retention, weight loss or wasting; any drug allergies; any history of other congenital malformations. Whether the child has any acute infections such as cold and fever, whether he/she is on his/her period, and whether he/she has any history of vaccination in the past month. Whether the condition runs in the family and whether there are relatives with the condition. This information is necessary for us to clarify the diagnosis as soon as possible and give the child the necessary treatment accordingly. We also hope that you will provide the above information as detailed and accurate as possible when you bring your child to the clinic. After the consultation, the doctor will give some necessary tests. Laryngoscopy is mandatory, we will also check the child’s neck ultrasound, soft tissue MRI and enhancement of the neck, blood and urine routine, blood type, biochemistry, coagulation, infectious diseases, ECG, chest X-ray, echocardiography, etc. according to the specific treatment plan. Regarding treatment, there are currently treatments such as surgery, sclerotherapy injection and oral sildenafil. After the diagnosis of lymphatic duct malformation in the child’s neck is clearly established, aggressive surgical treatment is one of the ways to cure the child’s disease. In order to have a successful surgery, ideal treatment results and to reduce the child’s pain due to intraoperative or postoperative complications, the doctor will double-check that the routine laboratory tests are normal before the surgery, and that the ultrasound, MRI and laryngoscopy results are within 3 months, after which time they need to be re-checked. If the surgery is completed successfully, and the treatment has entered a stable medication phase with the joint efforts of you and the doctor, your child can be discharged from the hospital and continue oral medication at home in a stable condition. However, there are some precautions that you should keep in mind and follow the doctor’s instructions strictly in order for your child to recover more quickly. (After the child is discharged from the hospital, he/she should continue to take oral sildenafil tablets, 20mg/time orally for weight ≥20kg; 10mg/time orally for weight <20kg, once every 8 hours.) During the period of oral sildenafil citrate, the normal use of antibiotics (such as cephalosporins), antipyretics, cough medicines and other conventional drugs are not affected, and the use of nitrates is prohibited; if certain special drugs are used at the same time, the doctor must be consulted first. Parents can come to the hospital one day in advance (without their child) to pay for an ultrasound examination. If your child develops symptoms of breath-holding or dyspnea that gradually worsen, changes in the size of the swelling, abnormal vision, headache, abdominal pain, etc., please seek prompt medical attention. Finally, we sincerely hope that our joint efforts will bring our child back to health at the fastest speed.