MR Imaging of Recurrent Colorectal Carcinoma Versus Fibrosis

Rafto, Stein E.; Amendola, Marco A.; Gefter, Warren B.

doi:10.1097/00004728-198805000-00037

Cited by 5 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This case may represent a sampling error during percutaneous biopsy. False-negative biopsies have been described in patients with recurrent rectal carcinoma, particularly in cases where significant fibrous response has occurred resulting either from the presence of malignancy or previous local treatment [10,16,17]. For this reason, we view a negative biopsy in the presence of a positive PET scan with suspicion and advise repeat biopsy to match the area biopsied under CT guidance as closely as possible, with the area of greatest activity on the PET scan.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Local recurrence of rectal cancer:evaluation with F-18 fluorodeoxyglucose PET imaging

Keogan

Lowe

et al. 1997

Abdom Imaging

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

“…In many cases, needle biopsy is required [14][15][16]. False-negative biopsies may result from sampling error, however, particularly in tumors with a marked desmoplastic reaction [16,17]. Malignant cells have increased rates of glycolysis compared with normal cells [18].…”

mentioning

confidence: 99%

Local recurrence of rectal cancer:evaluation with F-18 fluorodeoxyglucose PET imaging

Keogan

Lowe

et al. 1997

Abdom Imaging

View full text Add to dashboard Cite

show abstract

“…On T1 weighted images they may appear to be part of the mass and since they have round margins, interpretation of the margins may be incorrect if only T1 weighted images are examined. However on T2 weighted images the internal architecture of seminal vesicles and the zonal anatomy of the uterus is well demonstrated allowing differentiation of these normal pelvic structures from the mass (16). The third important criterion is the presence of contrast enhancement in a mass.…”

Section: Discussionmentioning

confidence: 99%

MRI of recurrent rectosigmoid carcinoma

Markus¹,

Morrissey²,

Degara

et al. 1997

Abdom Imaging

View full text Add to dashboard Cite

show abstract

“…In comparative studies better results have been reported for MR imaging than for CT mainly due to the potential of MR to differentiate between fibrosis and tumour recurrence with T2-weighted sequences [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

Local recurrence of rectal cancer: MR imaging before and after oral superparamagnetic particles vs contrast-enhanced computed tomography

et al. 2000

View full text Add to dashboard Cite

The aim of this study was to compare three imaging strategies for the diagnosis of local recurrence of rectal cancer: (a) MR imaging; (b) MR imaging after administration of enteral superparamagnetic particles (Ferristene); and (c) contrast-enhanced CT. Seventeen patients with previous surgery for rectal cancer were examined, 12 patients with local tumour recurrence in the pelvis and 5 patients with postoperative changes. Pelvic multi-coil MR imaging before and after oral administration of superparamagnetic contrast medium [Abdoscan (Ferristene USAN), Nycomed-Amersham, Lidingö, Sweden] as well as abdominal and pelvic CT was performed in all patients. The examinations were independently evaluated by three different radiologists. The general effect of the oral MR contrast medium, the delineation of normal and pathological structures as well as confidence in the diagnosis were registered on a visual analog scale (VAS). The diagnosis according to MR before and after oral contrast medium, and CT, was compared, in 16 patients, with the final diagnosis which was verified by biopsy (n = 3), surgery (n = 6), clinical follow-up (n = 4) and by follow-up with MR or CT (n = 3). No significant improvement in MR image quality was found after enteral contrast medium. The post-contrast MR diagnosis was not changed in any of the patients. The diagnosis on MR correlated with the final diagnosis in 12 of 16 patients (sensitivity 91%, accuracy 62%) and the diagnosis on CT in 11 of 16 patients (sensitivity 82 %, accuracy 56 %). The radiologists' "confidence" in the diagnosis and the degree of accordance with the final diagnosis did not score higher on MR after than before oral contrast administration; however, the accordance with the final diagnosis scored better on MR than on CT. No advantages of orally administered superparamagnetic contrast medium were observed in the examined patient group. Magnetic resonance is preferable to CT in diagnosing local tumour recurrence.

show abstract

MR Imaging of Recurrent Colorectal Carcinoma Versus Fibrosis

Cited by 5 publications

References 0 publications

Local recurrence of rectal cancer:evaluation with F-18 fluorodeoxyglucose PET imaging

Local recurrence of rectal cancer:evaluation with F-18 fluorodeoxyglucose PET imaging

MRI of recurrent rectosigmoid carcinoma

Local recurrence of rectal cancer: MR imaging before and after oral superparamagnetic particles vs contrast-enhanced computed tomography

Contact Info

Product

Resources

About