Extracapsular invasion of small hepatocellular carcinoma: MR and CT findings
| Autor: | Shigetoyo Saji, Kuniyasu Shimokawa, Takeyoshi Imaeda, Hiroo Goto, R. Mochizuki, Masayuki Kanematsu |
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| Rok vydání: | 1994 |
| Předmět: |
Adult
Liver Cirrhosis Male medicine.medical_specialty Carcinoma Hepatocellular genetic structures Contrast Media Satellite Nodule medicine Carcinoma Humans Radiology Nuclear Medicine and imaging In patient Neoplasm Invasiveness Ct findings Aged Retrospective Studies Epithelioma medicine.diagnostic_test business.industry Liver Neoplasms Magnetic resonance imaging Middle Aged medicine.disease Magnetic Resonance Imaging digestive system diseases Connective Tissue Hepatocellular carcinoma Female Radiology Detection rate business Tomography X-Ray Computed |
| Zdroj: | Journal of computer assisted tomography. 18(5) |
| ISSN: | 0363-8715 |
| Popis: | OBJECTIVE The purpose was to examine whether MR and CT imaging can detect extracapsular invasion of hepatocellular carcinoma (HCC) and, if this is possible, to determine its characteristic signs on MR and CT images. MATERIALS AND METHODS Thirty-eight patients with small HCC (< or = 3.0 cm in diameter) were studied to correlate the findings in surgically resected specimens with the findings on MR and CT images. RESULTS Ten of 38 patients had histologically proven extracapsular invasion of HCC. Of these 10 patients with extracapsular invasion, partial projections of the tumor into the surrounding area or satellite nodules in the immediate vicinity of the tumor were observed in 9 patients on T1-weighted images and in 5 patients on postcontrast CT images. Partial tumor projection or satellite nodules were not observed in patients without extracapsular invasion of HCC. The detection rate for these characteristic signs was 90% on MR and 50% on CT. CONCLUSION Magnetic resonance and CT imaging were useful for detection of extracapsular invasion of HCC. The characteristic signs for extracapsular invasion of HCC were partial tumor projection into the surrounding area and satellite nodules in the immediate vicinity of the tumor. |
| Databáze: | OpenAIRE |
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