Janeway spot or lesion (smoke ring)

Etiology

• one of the signs of endocarditis
• may also be seen in mycotic aneurysm

Pathology

• causative organisms have been isolated from lesions

Clinical manifestations

• they are irregular, erythematous, flat, painless macules (smoke rings) of the palms, soles, thenar eminence & hypothenar eminence of the hands, tips of fingers, & plantar surfaces of the toes
• they occur rarely in a diffuse rash
• in acute endocarditis, the lesions may be hemorrhagic or purple.

* images

More general terms

• sign/symptom
• abnormal morphologic structure (malformation)
• lesion

Additional terms

• Janeway, Edward G