Best treatment for fistula & spasm.

MRI REPORT  -  FISTULOGRAM TECHNIQUE: STIR Axial,  Sagittal  &  Coronal T2  Space  Axial  3D 2Mar2021 OBSERVATION: external  fistula opening  noted in   paramedian    perianal  skin e/o  thick  walled  [  length  4.7cm]  fistula  noted extending  through the posterior  intersphinteric region  to drain into anal  canal  at  6'o  clock position no  secondary  tracts small  abscess collection  of [volume  =1.5ml  ]  noted in posterior intersphinteric region The ischioanal and ischiorectal  fossae appear  normal bilaterally. The external sphincters appear  normal. The levator  ani  muscle appears normal on  both  sides. Urinary bladder  and urethra are  normal.  IMPRESSION: COMPLEX   INTERSPHINTERIC FISTULA IN PERIANAL REGION WITH SMALL ABSCESS COLLECTION OF NOTED IN  POSTERIOR INTERSPHINTERIC REGION -  TYPE 2    JAMES UNIVERSITY HOSPITAL CLASSIFICATIONS