Case report: a case of diffuse unilateral subacute neuroretinitis (DUSN) in a child

BMC Ophthalmology

Table 2 Investigations

Serology
Full blood count	Normal
Urea and electrolytes	Normal
Liver function test	Normal
Erythrocyte sedimentation rate (ESR)	Normal
C-Reactive protein (CRP)	Normal
Anti-nuclear antibodies	Positive
Anti-Streptolysin O titre	200 units/ml (Normal)
IgG/IgM Toxoplasma	Negative
IgG/IgM Toxocara	Negative
IgG/IgM B.burgdorferi	Negative
IgM Herpes simplex virus	Negative
IgM Cytomegalovirus	Negative
IgM Varicella zoster virus	Negative
IgM Parvovirus B19	Negative
Imaging
MRI brain	Normal
Magnetic Resonance Venogram brain	Normal
Magnetic Resonance Angiogram brain	Normal
Chest X-ray	Normal
CSF Analysis
White cell count	< 1 × 10⁶ /L)
Total protein	0.26 g/L
Glucose	2.9 mmol/L
Culture	Negative
Polymerase Chain Reaction (PCR) for herpes simplex virus	Negative
PCR for Enterovirus	Negative
PCR for Parechovirus	Negative
PCR for Streptococcus pneumoniae	Negative
PCR for Haemophilus influenza	Negative
PCR for Cytomegalovirus	Negative
PCR for Bartonella	Negative
PCR for Treponema palladium	Negative
Other
Mantoux	Positive (but had BCG vaccine)
Quantiferon	Negative
Gastric washings	No acid-fast bacilli

ISSN: 1471-2415