"neoplasms are the most common cause (~60–65%) 8,9"
"vascular causes (~20–30%) 8,9: vasculitis (polyarteritis nodosa being the commonest cause), renal artery aneurysms, AV malformations and fistulas, renal vein thrombosis"
"It is named after the German physician Carl Reinhold August Wunderlich (1815-1877), who published the first case description in 1856, and who is most famously remembered for his pioneering work on clinical thermometry 5,6. The term Wunderlich syndrome was first recorded by Coenen in 1910 6."
"Wunderlich syndrome is clinically characterised by Lenk's triad:"
"vascular causes (~20–30%) 8,9: vasculitis (polyarteritis nodosa being the commonest cause), renal artery aneurysms, AV malformations and fistulas, renal vein thrombosis"
"vascular abnormalities suggestive of vasculitis or AVM/aneurysm"
"On plain abdominal X-rays, indirect features of a retroperitoneal mass include effacement of the psoas outline, loss of renal fat outline, and displacement of bowel."
Expected headings
"Practical points"
"However, this full triad is present in a minority; many present with isolated flank/abdominal pain 2."
"History and etymology"
"suspicion of neoplasm if no definite benign features (e.g. minimal/no fat, irregular enhancement)"