$tabla .= '

    <div class="col-lg-4 col-md-12 col-xs-12">
      <div class="card mb-4 shadow-sm">
        <div class="card-body">
          <p class="card-text">Titulo:'.$rows['name'].'</p>
   
            <a href=""><img width="100" src="data:' . $row['tipoImgA'] . ';base64,' . base64_encode($row['imagenImgA']) . '"></a>
 
          <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
          
          <div class="d-flex justify-content-between align-items-center">
            <div class="btn-group">
              <button type="button" class="btn btn-sm btn-outline-secondary">View</button>
              <button type="button" class="btn btn-sm btn-outline-secondary">Edit</button>
            </div>      
          </div>

        </div>
      </div>
    </div>';

<img src="src="data:echo'.$row['tipo'].'.'.$rows['imagen'].'"

<a href=""><img width="100" src="data:<?php echo $row['tipo']; ?>;base64,<?php echo  base64_encode($row['imagen']); ?>"></a>