Facial hemihypertrophy is a condition where one side of the face and sometimes parts of the body are enlarged. It can be caused by endocrine dysfunction, genetic factors, vascular abnormalities, or neurogenic malformations. Clinically, it involves enlargement of structures on one side of the face like the eyelids, cheeks, lips, and bones. Radiographs show bone and tooth enlargement on the affected side. Diagnosis is made by noticing facial asymmetry clinically and seeing bone and tooth enlargement on imaging. Management focuses on cosmetic repair through procedures like soft tissue reduction, face lifts, and jaw surgery.

1. Facial hemihypertrophy

2. General information
• Entire half of the body, one or both limbs,
face, head and associated structure may be
involved
• Hyperplasia of the tissue rather than
hypertrophy of the tissue is represented

3. Aetiology
• Endocrine dysfunction
• Genetic
• Vascular abnormalities
• neurogenic malformations

4. Clinical features
• It involves the eyelids, cheeks, lips, facial bones,
tongue, ears and tonsils
• more common on right side of the body
• poorly localised, vague, painful sensation in
muscles affected
• enlargement of one half of the face present since
birth
• associated with other abnormalities like mental
deficiency, skin abnormalities, compensatory
scoliosis and hemi-megalencephaly

5. Oral manifestation
• Dentition is abnormal in three respects –
Crown size and root may be large
• Bone of maxilla and mandible is also enlarged
• buccal mucosa frequently appears velvety and
may hang in soft pendulous folds on affected
side

6. Radiographic features
• Bone enlargement
• alveolar process is enlarged in some cases
• mandibular canal increases on the affected
site
• Crown size of the teeth is enlarged

7. Diagnosis
• Enlargement of one side of face can be
noticed clinically
• radiological diagnosis show enlargement of
bone and teeth on one side

8. Management
• Cosmetic repair – includes soft tissue
debulking, face lifts ad orthognathic surgery