Abstract：
Hemifacial hyperplasia (HH) is a rare congenital condition involving enlargement of one or more tissues of the face. The treatment is surgically challenging and requires expertise. This manuscript aims to report two similar appearing HH but warranting different surgical treatment. A 19-year-old female and a 14-year-old boy presented with right facial asymmetry since birth and sought correction of the same. Surgical treatment was planned. Based on clinical history, diagnosis and imaging, HH was diagnosed. The first case was entirely a soft tissue abnormality that was treated with debulking while the second case had involvement of facial bones, necessitating surgical recontouring. The facial asymmetry was addressed. Healing was uneventful. Though the aesthetical concern and appearance of the two cases of HH were same, the treatment vastly differed. This was based on the source of asymmetry. Proper diagnosis and informed decision are a key for successful surgical outcome.
摘要：
面部增生（HH）是一种罕见的先天性疾病，涉及面部一个或多个组织的增大。治疗在手术上具有挑战性，需要专业知识。本手稿旨在报告两种相似的HH，但需要不同的手术治疗。一名19岁的女性和一名14岁的男孩自出生以来就出现了右面部不对称，并寻求纠正。已计划手术治疗。根据临床病史,诊断和成像，HH被诊断。第一例完全是软组织异常，接受了减积治疗，而第二例涉及面部骨骼，需要手术整形。解决了面部不对称问题。愈合是平静的。尽管两例HH的美学关注和外观相同，治疗大不相同。这是基于不对称的来源。正确的诊断和明智的决定是成功手术结果的关键。
