BRITISH JOURNAL OF CLINICAL PRACTICE, vol.44, no.12, pp.744-745, 1990 (SCI-Expanded)
Polyarteritis nodosa (PAN) is a systemic disease which involves the kidneys in 70% of cases. We report a case in which the pre-operative diagnosis was perirenal abscess or perirenal tumour, but at operation a perirenal haematoma was found. After pathological examination, it was recognised as renal involvement with PAN.