Lymphatic malformation（LM）is a rare congenital disease that often involves the cervicofacial region. Cervicofacial LM, especially in cases of microcystic LM, is often associated with skeletal abnormalities, leading to functional and aesthetic problems. To date, treatments for common LM include surgical excision, sclerotherapy, and pharmacotherapy. On the other hand, surgical excision is often the first-line treatment option for microcystic LM because sclerotherapy is less effective for microcystic LM.
We report 4 cases of jaw deformity caused by microcystic LM that were treated by osteotomy between April 2018 and May 2019. Case 1 had the most severe skeletal changes and three operations were performed；mandibular angle osteotomy, anterior segmental osteotomy of the mandible, and a mandibular body osteotomy. Case 2 was treated by two osteotomies；one genioplasty followed by mandibular margin osteotomy. Cases 3 and 4 were treated by orthognathic surgery and genioplasty, respectively. No major complication related to the operations was observed.
Regarding the operative time and amount of blood loss, there was little difference between osteotomy for LM and that for other diseases performed at our institution. Therefore, we consider osteotomy to be a safe and useful treatment option for LM-related jaw deformity.
