1/7. Bellini duct (collecting duct) carcinoma of the kidney.carcinoma of the collecting ducts, or Bellini carcinoma, is a rare renal tumour and, unlike most renal cell carcinomas, it derives from distal tubules. It displays highly aggressive behaviour and has a poor prognosis. In this study, the authors present three cases which they observed over the past three years.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
2/7. Solitary delayed contralateral testicular metastasis from renal cell carcinoma.We report a 60 year old male presenting with contralateral testicular metastasis 7 years following radical nephrectomy for renal cell carcinoma. Testicular metastases from renal cell carcinoma reported in literature are predominantly ipsilateral and invariably on the left side. Usually these are present simultaneously with the renal primary or precede the diagnosis of renal tumors. Delayed contralateral testicular metastatic has not been reported to the best of our knowledge. The case highlights the unique behaviour of renal cell carcinoma with an unusual site of recurrence. The clinical presentation, pathogenesis and management of this rare presentation along with review of recent literature are discussed.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
3/7. Differentiation of a pancreatic metastasis of a renal cell carcinoma from a primary pancreatic carcinoma by echo-enhanced power Doppler sonography.In a 70-year-old patient who had been treated for a renal cell carcinoma, a pancreatic mass was detected on CT scan. To differentiate a pancreatic metastasis of the renal cell carcinoma from a pancreatic carcinoma, an echo-enhanced power Doppler sonography was performed. The pancreatic mass demonstrated a strong echo enhancement, proving its hypervascularization. This behaviour favoured the diagnosis of a pancreatic metastasis of the renal cell carcinoma which was confirmed by histology. The principles and the role of echo-enhanced power Doppler sonography in the differential diagnosis between a primary pancreatic carcinoma and a metastasis of a renal carcinoma in the pancreas are discussed. We conclude that this technique can provide an important contribution to the diagnosis in this special instance. However, histology is the standard in the differential diagnosis of pancreatic tumours.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
4/7. Long survival in an untreated solitary choroid plexus metastasis from renal cell carcinoma: case report and review of the literature.brain metastases from renal cell carcinoma (RCC) are rare. Among them, the metastases localized only in the choroid plexus are exceptional and only six cases are reported in the literature. Here we report on a patient with a single choroid plexus metastasis from RCC which presented an unusual biological behaviour. For several years, such metastasis was interpreted as a benign intraventricular tumor and was not treated. Four years after the initial neuroradiological evidence, because of the appearance of symptoms, the brain metastasis was excised. We think that this unusual biological behaviour of the tumor determined the late inset of the neurological symptoms, despite the location at the choroid plexus that usually leads to an early obstructive hydrocephalus. To our knowledge, this 46 months survival is the longest survival of a patient affected by a single choroid plexus metastasis from RCC.- - - - - - - - - - ranking = 2keywords = behaviour (Clic here for more details about this article) |
5/7. Ten years survival after recurrent intracranial metastases from a renal cell carcinoma.The clinical behaviour of renal cell carcinoma is often unpredictable. We report a patient who underwent three palliative resections over 10 years for recurrent intracerebral metastases from a renal cell carcinoma.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
6/7. Spontaneous caval tumor thrombus necrosis and regression of pulmonary lesions in renal cell cancer.Idiopathic regression of metastases is one of the features of the unpredictable behaviour of renal cell carcinoma. We report a patient with pulmonary metastases and a tumor thrombus in the inferior vena cava with spontaneous regression of the lung lesions and necrosis of the thrombus before any therapy was instituted.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
7/7. Metastatic renal cell carcinoma of the parotid gland presenting as a neck mass.Metastatic tumours in major salivary glands are uncommon, with a higher incidence of primary sites from the head and neck. Renal cell carcinoma often exhibits unusual behaviour causing both clinical and pathological confusion. Renal cell carcinoma initially presenting as a metastatic swelling in the parotid gland or elsewhere in the head and neck is rare. We report a case of renal cell carcinoma metastatic to the parotid gland where the neck swelling was the first sign of the tumour, with a comprehensive review of the literature.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |