Hemifacial hypertrophy

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Hemifacial hypertrophy (also termed facial hemihypertrophy,[1] facial hemihyperplasia,[1] or Friedreich's disease)[2] abbreviated as (HFH) is rare congenital disease characterized by unilateral enlargement of the head and teeth.[3][4] It is classified as true HFH (THFH) with unilateral enlargement of the viscerocranium, and partial HFH (PHFH) in which not all structures are enlarged. Hemifacial hypertrophy can cause a wide spectrum of defects or may involve only muscle or bone.[4] it is usually treated surgically.[5] It is believed to be a minor form of hemihypertrophy.[6]

References

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