sdt in table cell

During parsing of a table in docx, sdt control is found in a cell. Now parser errorneously post 1 column output for the row below. (it thinks that there is only 1 column in this table row). How to fix/handle this?

Cell structure looks like as below. 
<tr> 
    <tc>
    </tc>
    <sdt> 
       <tc>
       </tc>
    </sdt>
</tr>