Case Of the Week (COW) 22 Sep 2013
Answer:
OPTIC NERVE HEAD DRUSEN
Findings:
Bilateral symmetric Focal tiny hyperdensities noted in both optic discs. The appearance is typical of Optic Nerve Head Drusen. Other possible causes of such calcifications include Astrocytic Hamartomas or Choroidal osteomas.
Discussion:
Optic disc drusen (ODD) are also known as hyaline bodies and are a relatively common entity. The condition is due to globules of mucoproteins and mucopolysachharides that progressively calcify in the optic disc . In most patients, optic disc drusen are an incidental finding. It is bilateral in two thirds to three quarters of clinical casesl. Eventually 75% of patients will develop some peripheral field defects They are typically seen in patients with age related macular degeneration.
Contributed By:
Dr. Babu Peter MD, DNB
Associate Professor, Barnard Institute of Radiology
Senior Consultant Radiologist, Aarthi Scans, Chennai
Answer:
OPTIC NERVE HEAD DRUSEN
Findings:
Bilateral symmetric Focal tiny hyperdensities noted in both optic discs. The appearance is typical of Optic Nerve Head Drusen. Other possible causes of such calcifications include Astrocytic Hamartomas or Choroidal osteomas.
Discussion:
Optic disc drusen (ODD) are also known as hyaline bodies and are a relatively common entity. The condition is due to globules of mucoproteins and mucopolysachharides that progressively calcify in the optic disc . In most patients, optic disc drusen are an incidental finding. It is bilateral in two thirds to three quarters of clinical casesl. Eventually 75% of patients will develop some peripheral field defects They are typically seen in patients with age related macular degeneration.
Contributed By:
Dr. Babu Peter MD, DNB
Associate Professor, Barnard Institute of Radiology
Senior Consultant Radiologist, Aarthi Scans, Chennai