Non-tumorous enhancement caused by cholecystic venous inflow shown on biphasic CT hepatic arteriography: comparison with hepatocellular carcinoma
| Autor: | T Nakamura, Tsunehiko Nishimura, Takuji Yamagami, Y Kin |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Male
Dorsum medicine.medical_specialty Carcinoma Hepatocellular Hemodynamics Diagnosis Differential Hepatic Artery Late phase Humans Medicine Radiology Nuclear Medicine and imaging Vein Aged Portography business.industry Liver Neoplasms Gallbladder General Medicine medicine.disease medicine.anatomical_structure Liver Hepatocellular carcinoma Female Radiology Tomography X-Ray Computed business Arterial portography Early phase |
| Zdroj: | The British Journal of Radiology. 73:1275-1281 |
| ISSN: | 1748-880X 0007-1285 |
| DOI: | 10.1259/bjr.73.876.11205671 |
| Popis: | The haemodynamics in non-tumorous abnormalities on CT arterial portography (CTAP) owing to cholecystic venous direct inflow to the liver were compared with the haemodynamics in hepatocellular carcinoma. 53 patients who simultaneously underwent CTAP and CT during hepatic arteriography (CTHA) to detect hepatocellular carcinoma had the late phase added to CTHA. Changes in size, shape and pattern of 47 non-tumorous enhancement abnormalities on the liver around the gall bladder or in the dorsum of segment IV between the early and late phases on biphasic CTHA as well as of 60 tumorous lesions were determined. Enhancement on biphasic CTHA was seen in all 47 lesions with a non-tumorous portal defect (early phase alone, n=8; late phase alone, n = 3; both, n = 36). In these 47 lesions, the size and the shape of enhancement changed in 63.8% and 51.1%, respectively, between the early and late phases on CTHA; the pattern of enhancement did not change in 72.3%. On the other hand, the size of enhancement on biphasic CTHA changed in only 16.7% of 60 tumours, and the shape in only 5%, although the enhancement pattern changed in a large proportion (80%). In conclusion, owing to the difference in haemodynamics, non-tumorous abnormalities caused by cholecystic venous inflow and tumours are clearly delineated on biphasic CTHA. Thus, adding the late phase to previous single phase CTHA (i.e. performing biphasic CTHA) is useful in differentiating the two entities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|