Hello,
Usually review in progress means the Medical Exams report are still being verified and yet been not approved completely for any reason of the department, But, It can also been reviewed for any other particular reason. We suggest you to visit the official website of Government of Canada and under Immigration & Citizenships tab follow Get Medical or Polices Checks option and you will find all the details related to in progress option, Beside this you can directly get in touch with Help Center of Government Of Canada website and complete an application form regarding your queries and they will soon be get in touch with you.
Beside this if you have any other problem please feel free to get in touch with us.
Thank-You!