Many complications such as infection, expander exposure, and flap necrosis have been reported after tissue expander insertion. However, striae distensae as a complication of tissue expansion has not been reported. We experienced 2 cases of striae distensae following tissue expansion.
  The cause and pathogenesis of striae distensae have not been fully understood, but many studies
suggest the associated factors; stretching, age, glucocorticoid, skin characteristics, obesity, growth spurt and pregnancy etc. An effective treatment is not yet known.
  Striae distensae is a possible complication following the tissue expansion of the thin skin area, such as the medial aspect of upper arm and medial thigt, especially in young female and special care should be taken to avoid it during tissue expansion.