There are multiple definitions:

1. lateral internal sphincterotomy(English)

   • Surgery

2. [third] left intercostal space(English)

   • RIS, CI, HR, LSB, SVI, SVR
   • Anatomy, Medical imaging
   • https://doi.org….1172/jci103993

3. laboratory information system(English)

   • this system receives and stores requests for tests, and results are entered by laboratory technicians or directly from laboratory instruments
   • HIS, LIMS
   • Clinical chemistry
   • https://doi.org…69378-5/50008-9