** Thanks for contacting with your health concern and after reviewing your case history I m of the following opinion: 1. You are probably suffering from Anismus or dyssynergic defecation and symptoms may include tenesmus or constipation and may sometimes be attributed to extra pyramidal motor disturbance due to Parkinson disease PS. According to defecography your symptoms could be in the Type III functional defecation disorder i.e. : impaired relaxation with adequate propulsion so get a second opinion from a general surgeon. [he may carry out anorectal manometry,rectal cooling test] 2. Initially simple adjustment like: bulk forming agents [psyllium husk], adequate hydration and pelvic floor exercises helps to form optimise stool and layer biofeedback retraining, botox injections and surgical resurrection [partial resection is ideal] can be carried out