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Duodenal filling defects

Dr Alexandra Stanislavsky and Dr Jeremy Jones et al.

Duodenal filling defects may be caused by a wide variety of duodenal pathology which may be divided by their location and pathological process.

Extrinsic

gallbladder impression
CBD impression
gas-filled diverticulum

Intrinsic

Note: please refer to duodenal mucosal nodular filling defects for that specific gamut.

benign mass
- adenoma
- leiomyoma
- lipoma
- hamartoma (Peutz-Jeghers syndrome)
- prolapsed antral polyp
- Brunner's gland adenoma
- villous adenoma
- islet cell tumour
- gangliocystic paraganglioma
malignant neoplastic mass
- carcinoid tumour
- adenocarcinoma
- ampullary carcinoma
- lymphoma
- sarcoma
- metastases, e.g. stomach, pancreas, gallbladder, colon, kidney, melanoma
- retroperitoneal lymph node involvement
non-neoplastic mass
- papilla of Vater
- choledochocoele
- duplication cyst
- pancreatic pseudocyst
- duodenal varix
- superior mesenteric artery collateral
- intramural haematoma
- adjacent abscess
- stich abscess
- ectopic pancreas
- heterotrpic gastric mucosa
- prolapsed antral mucosa
- Brunner's gland hyperplasia
- benign lymphoid hyperplasia