<prompt> Trench mouth is :Sub mucosal fibrosisTumour at uveal angleUlcerative lesion of the tonsilRetension cyst of the tonsil  <response>: Ans- Ulcerative lesion in the tonsil 202-D 87-LTUlcerative gingivitis - is a highly infectious and ulcerative lesion of the tonsils.It was common during the first world war, being called Trench mouth of Vincents angina . 