| + | The colon is found to be dilated and impacted with faeces, with the most sever dilatation occuring in the transverse and descending colon<sup>4</sup>. Histologically, the colon is usually normal: the only cases in which histological abnormalities have been reported were mature adult cats, which is an atypical signalment for a congenital condition<sup>1,4,5</sup>. The histological findings in these cats were aganglionosis and absent myenteric ganglia. |