问题描述：
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If your Visa and Study Permit are still valid you should be permitted back into Canada. Please be advised that the expiry date on a Visa cannot be extended. If you wish to depart after the expiry of your visa you must re-apply for a new visa.
A new application must include ALL the required documents, information submitted on a previous application will not be transferred onto a new application.
However, if you underwent a medical examination in connection with your application, you must arrive in Canada within one year of the date of the examination. For this reason, if you submit a new application within nine months after the date of your first medical examination you may be exempted from the medical exam.
If your Visa and Study Permit are still valid you should be permitted back into Canada. Please be advised that the expiry date on a Visa cannot be extended. If you wish to depart after the expiry of your visa you must re-apply for a new visa.
A new application must include ALL the required documents, information submitted on a previous application will not be transferred onto a new application.
However, if you underwent a medical examination in connection with your application, you must arrive in Canada within one year of the date of the examination. For this reason, if you submit a new application within nine months after the date of your first medical examination you may be exempted from the medical exam.
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