Radiology Packet 34

GI Contrast

5 mo old M Golden Retriever“Remi”

• HX = presented for evaluation of vomiting for 7 days

5 mo old M Golden Retriever“Remi”

5 mo old M Golden Retriever“Remi”

• RF

– The stomach is displaced cranially and it contains a small amount of barium.

– Very large barium filled loops of bowel are visible, there are far too many large loops present for this to be all colon.

– Also, the “hairpin turns” and “stacking” of loops is characteristic of small bowel distension.

– The bladder is displaced caudally into the pelvic canal.

• RD

– Small intestinal obstruction

• Next

– Surgery

9 yr old MC DSH “Shadow”

• HX = History of vomiting, anorexia, and weight loss. Survey rads were taken as well as a systematic UGI.

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

9 yr old MC DSH “Shadow”

• RF– On the survey films there are segments of SI which are dilated beyond normal limits with

fluid and gas.

– Also, there is slight reduction in mid-abdominal detail and spondylosis of L6-7-S1.

– At Time 0 note the normal stomach position.

– At Time 15 minutes the leading edge of the barium column widens and there are irregular filling defects here.

– At Time 30 minutes more of the distal portion of the SI are dilated.

– At Time 45 minutes there is continued dilation of the SI and the point of obstruction is now detected as a tapering, pointed constriction of barium seen in the mid abdomen on the lateral view and along the mid-right abdominal wall on the VD film.

– At time 1.5 hours the obstruction is again evident and one segment of SI is noted to be thickened in the mid-ventral abdomen to the right.

– At time 2 hours the dilated loop of bowel caused by the obstruction is clearly seen from the remaining SI.

• RD– Partial mid-distal small intestine obstruction, most common cause in an older cat is a

neoplastic process such as adenocarcinoma.

13 yr old FS DSH“Spotty”

• HX = thirty day history of vomiting, regurgitation after ingestion of solid food

13 yr old FS DSH“Spotty”

13 yr old FS DSH“Spotty”

• RF– A negative contrast gastrogram was performed and the air outlines a clearly defined opaque

structure in the pyloric antrum.

– The structure does not change position between the 2 views indicating that it is relatively fixed in position.

– There are incidental findings of luxation and degenerative joint disease of the left coxofemoral joint.

– In the VD view a mineral opacity structure is superimposed with the pelvic canal, it is a type of projectile likely from a pellet gun.

• RD– Gastric foreign body

• Next– Surgical removal

11 yr old M Golden Retriever“Bosley”

• Hx = two day history of vomiting, has a history of pica

11 yr old M Golden Retriever“Bosley”

11 yr old M Golden Retriever“Bosley”

11 yr old M Golden Retriever“Bosley”

11 yr old M Golden Retriever“Bosley”

• RF– In the one hour films the pyloric region of the stomach and the descending duodenum have

an abnormal appearance, the bowel lumen is narrow and has a plicated appearance.

– In the VD view there is asymmetrical narrowing of the lumen of the descending duodenum which is often described as an “apple core” lesion.

– The barium outlines granular material in the ascending duodenum.

– In the 1 hr 45 min films there has been some further progression of a small volume of contrast into the jejunum.

• RD– Delayed gastric emptying due to abnormality of the pylorus/descending duodenum

– Most likely these radiographic changes are due to an infiltrative bowel lesion, intestinal adenocarcinoma is the top differential

3 mo old F GSD“Dukey”

• HX = presented for regurgitation

3 mo old F GSD“Dukey”

1 yr old F Newfoundland“Chelsea”

• HX = history of regurgitation and weight loss

1 yr old F Newfoundland“Chelsea”

1 yr old F Newfoundland“Chelsea”

1 yr old F Newfoundland“Chelsea”

1 yr old F Newfoundland“Chelsea”

• RF

– On the lateral view of the survey films there is an air lucency over the cranial mediastinum with a soft tissue opacity ventral to this.

– Also, there is a thin soft tissue structure overlying the caudal vena cava.

– On the VD survey film there is a widened cranial mediastinum and a linear soft tissue structure left of the spine.

– On the esophogram contrast medium outlines and defines an abnormally enlarged esophagus.

• RD

– Megaesophagus

3 mo old F GSD“Dukey”

3 mo old F GSD“Dukey”

• RF

– The lateral survey film of the thorax demonstrated a large air-filled esophageal diverticulum cranial to the heart.

– The trachea was displaced ventrally by the esophagus.

– On the esophogram a large diverticulum was noted cranial to the heart base.

– The diverticulum was created by a focal narrowing of the esophagus just cranial to the carina.

– Also, the contractions in the esophagus distal to the focal narrowing appeared weak.

• RD

– Persistent right aortic arch

• Next

– Surgery