Irrepressible renal colic from spontaneous subcapsular hematoma as a sign of presentation of renal neoplasia. Case report and review of the literature.

Renal adenocarcinoma can present with a wide range of symptoms and clinical signs and among them pain is the more frequent. As a matter of fact, it can also assume the features of a reno-ureteral colic. This kind of symptom, however, is more frequently combined with macro-hematuria and seldom presents alone, even in the initial phases of the clinical course. In this case, and if it assumes the features of strong and irrepressible pain, it can probably be related to sudden and remarkable hematic harvest in subcapsular space or, owing to its breach, in perirenal space. Besides the benign neoplastic pathology (angiomyolipoma) or the malignant one, the spontaneous subcapsular or perirenal hematoma may be due to several other etiopathogenetic factors, the most significant being arteriopathy (poliarteritis, aneurysms), phlogosis and hemocoagulopathy. The present case has prompted the authors to underscore the importance and the meaning of isolated algetic lumbar symptomatology in the diagnosis of complicated renal neoplasia. After a critical review of the literature on the modes of presentation of algetic symptomatology in renal adenocarcinoma, particularly spontaneous subcapsular hematoma, the authors report on a 53 year-old male patient who consulted because of a sudden irrepressible pain in his left flank, which could be only partially mitigated by stronger analgetics. Examinations urgently carried out (abdominal ultrasound, urography, pelviabdominal computed tomography) made it possible to diagnose a widespread secondary spontaneous subcapsular hematoma with left-sided solid renal neoplasia.(ABSTRACT TRUNCATED AT 250 WORDS)