Abstract
Objective: The purpose of this study is to report the spectrum of MR findings of pancreatic islet cell carcinoma. Materials and Methods: The MR scans of 33 patients with islet cell carcinoma were retrospectively reviewed. Magnetic resonance detected the primary tumor in 21 of 27 patients (78%) who had not had prior resection of their primary tumor. Mean tumor diameter was 7.1 cm (range 3.5-13.0 cm). Results: In all patients, the primary tumor on Tl-weighted images (TR/TE = 250/15) was of signal intensity equal to or lower than that of the adjacent normal pancreas. The primary tumor on T2-weighted images (TR/TE = 2, 000/ >100) was of signal intensity the same as or higher than fat in 18 of 21 patients (86%) and had mixed signal intensity in the other 3 (14%). Hepatic metastases were found in 28 of 33 patients (85%). Liver metastases were categorized as “usual” (variably circumscribed, homogeneous lesions of medium signal intensity on T2-weigh ted images) in 19 of 28 patients (68%), necrotic in 8 of 28 (29%), hemorrhagic in 3 of 28 (11%), and calcified in 1 of 28 (4%). Extrahepatic metastases were found in 18 of 33 patients (55%). Conclusion: We conclude that MRI is an excellent modality for the diagnosis and routine follow-up of patients with islet cell carcinoma.
Original language | English (US) |
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Pages (from-to) | 735-740 |
Number of pages | 6 |
Journal | Journal of computer assisted tomography |
Volume | 17 |
Issue number | 5 |
DOIs | |
State | Published - 1993 |
Keywords
- Hemangioma
- Liver
- Magnetic resonance imaging
- Neoplasms
- Neoplasms
- Pancreas
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging