[Small size cephalo-pancreatic cancer. Demonstration of MRI/MRCP usefulness]. / Neoplasm cefalo-pancreatic de mici dimensiuni operabil. Demonstrarea utilitatii IRM/MRCP.

48 years old woman with obstructive jaundice has been examined by abdominal ultrasound followed by MRI. The suspicion of cephalic pancreatic cancer raised by ultrasound was confirmed by MRI and MRCP. Association of MRCP with axial and coronal T1 and T2 sequences successfully demonstrated a resectable tumor, confirmed at surgery. MRI/MRCP is demonstrating great potential in predicting resectability of cephalic pancreatic tumors.

[Role of computerized tomography in the diagnosis of transitional cell carcinoma of the upper urinary tract]. / Rolul tomografiei computerizate în diagnosticul carcinomului tranzitional de uroteliu superior.

PURPOSE: To evaluate the computed tomography (CT) semiological criteria used in the diagnosis of transitional cell carcinoma of the upper urinary tract. MATERIALS AND METHODS: 26 patients with transitional cell carcinoma of the upper urinary tract underwent preoperative CT. In all cases nephroureterectomy was performed and CT and histopathologic findings were compared. RESULTS: 16 tumors were infiltrative and 10 tumors were sessile. The smallest tumour had 7 mm diameter and the largest one 13 cm. Associated focal hydronephrosis appeared in 11 cases and diffuse hydronephrosis in 7 cases. The vast majority of these tumors (69.23%) had a 21 to 50 Hounsfield Units enhancement. CONCLUSIONS: CT is a powerful tool to diagnose transitional cell carcinoma of the upper urinary tract when data acquired in intravenous urography and echography are equivocal.

[Renal cell carcinoma- diagnosis by computed tomography]. / Rolul tomografiei computerizate în diagnosticul cancerului renal chistic.

In approximately 10% of cases, renal cell carcinoma (RCC) could present as a fluid- filled cystic mass. There are three mechanisms by which RCC may become cystic: extensive cystic necrosis, intrinsic cystic growth and origin from the epithelium lining a simple renal cyst. Simple renal cysts are very common. Uncommonly these cysts are complicated by hemorrhage, infection and possibly ischemia. The goal of the radiologist in evaluating these cystic lesions is to distinguish malignant neoplastic cystic masses from non-neoplastic complicated cysts so that appropriate management can be undertaken: RCC is best treated by surgical excision while non-neoplastic complicated cysts do not require surgery. The radiologic findings in these cystic masses which must be carefully evaluated include calcification, abnormal density, septations, nodularity, wall thickening and enhancement.