Question 1 · Hard
A 14-year-old boy from a rural district has had scanty, foul-smelling left ear discharge for years. Otoscopy shows an attic perforation with white flakes. For 5 days he has had fever with rigors that rises and falls several times a day. There is oedema and tenderness over the posterior part of the left mastoid, and tenderness along the left jugular vein. Which complication is most likely?
- ALateral sinus thrombophlebitis
- BPetrositis (Gradenigo syndrome)
- COtogenic meningitis
- DTemporal lobe abscess
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Answer: A · Lateral sinus thrombophlebitis
An attic perforation with white flakes is unsafe (squamosal) CSOM with cholesteatoma, which erodes bone and spreads infection inwards. Hectic 'picket-fence' fever with rigors from septic emboli, Griesinger sign (oedema over the mastoid emissary vein) and tenderness along the jugular vein point to thrombophlebitis of the lateral (sigmoid) sinus. Contrast CT or MR venography shows the thrombus (empty delta sign). Treatment is IV antibiotics and urgent mastoid exploration with removal of disease and exposure of the sinus.
- B: Gradenigo syndrome is discharge, retro-orbital pain and sixth nerve palsy.
- C: Meningitis gives headache, neck rigidity and Kernig sign rather than hectic fever with Griesinger sign.
- D: A temporal lobe abscess presents with headache, drowsiness and focal signs such as aphasia.