Wednesday, 23 January 2019

Janeway lesion

Janeway lesions are medical signs.

Features

  • Non-tender
  • Erythematous or haemorrhagic 
  • Macular or nodular 
  • Lesions on the palms or soles 
  • Only a few millimeters in diameter

 

Pathophysiology

  • Septic emboli reach the tissues and deposit bacteria
  • Micro-abscesses form 
  • Marked necrosis and inflammatory infiltrate
  • Affects the dermis but not the epidermis

Causes

  • Infective endocarditis

See also

  • Osler's node

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