Localization of islet cell tumors by dynamic CT: comparison with plain CT, arteriography, sonography, and venous sampling

Carcinoid tumors of the pancreas: CT findings

“…Different radiological methods have been used to diagnose islet cell tumors and carcinoid tumors: echography, CT, MRI, scintigraphy, transhepatic portal venous sampling, selective arteriography, endoscopic echography and surgery [8][9][10][11][12][13][14][15][16].…”

“…Following administration of intravenous contrast material, there is a marked enhancement of the tumor [8,9,11,12,14,16]. This enhancement is not related to the degree of functioning of the pancreatic tumor [3].…”

Insulinoma: Literature’s Review (2)

“…A recent single-centre prospective study showed a sensitivity of 93% and a specificity of 95% in localization of intra-pancreatic lesions. EUS could detect all tumors visualized by every other conventional technique, thus questioning the need for the rest imaging modalities (Figure 6-8) [44][45][46][47][48]. CT scan showing an insulinoma (white dot pointed to by yellow arrow) in the body of the pancreas (P with arrows pointing to the body and tail of the pancreas).…”

The Visualization of Gastroenteropancreatic Endocrine Tumors

“…Except for readily visualized large tumors, the detec tion of GEP endocrine tumors is mainly based on their hypervascularization [10]. Results of studies indicate that 30-70% of small solitary insulinomas and gastrinomas are detected at CT [15,[19][20][21], these figures are lower in patients with the MEN-I syndrome [15]. Although most investigators used 4-mrn sections, CT rarely detects tu mors with a diameter less than 2 cm, unless a dramatic blush occurs after injection of contrast medium [19]; intra-arterial injection of contrast medium is probably not required [22],…”