Hi Paula,

A two part excision is also known as serial excision.  This can be done for large moles or large scars or small areas of hair loss on the scalp.  When one excision would result in a very large excision and a long scar, the surgery is split up and part of the scar (or mole or alopecia) is removed then the rest is removed after the area has healed.  It can even be done over 3 to 4 times. 

The length of scars is much less important than their orientation, color, surface characteristics and location. 

Depressed scars dont respond to Lasers alone.  Sometimes filling with Restylane or Juvederm does not even work if the scar is tethered down.  The filler just ends up to the left or right of the scar.

Releasing the scar and filling it is an option.  Excision and dermabrasion is an option.  There are multiple options in scar revision but the options are limited by the patient's skin color and ethnicity. 

If you email me some pictures, I would be glad to take a look and make more specific comments.

Good luck