What's Your Diagnosis and Treatment? Acute vomiting and diarrhea in a 3 year old pitbull.

Fig. 1: Patriot

Patriot is a 3-year-old male neutered 29 kg. pitbull that presented to Circle City Veterinary Specialty and Emergency Hospital with a history of acute vomiting and diarrhea.(Fig. 1) He had eaten bones 5 days ago and began vomiting 3 days prior to presentation.  He also had some episodes of diarrhea during this time.

On physical examination Patriot was bright and alert and slightly dehydrated. An egg sized firm movable mass was palpated in the mid-abdomen but otherwise his abdomen was soft and non-painful and no other abnormalities were found.

Complete blood count and serum chemistry profile were normal.

Lateral and ventrodorsal radiographs were obtained. (Figs. 2,3)

Fig. 2

Fig. 3

 What is your diagnosis?
 What is the next step for this patient?