PMC5904803_01
Prechemotherapy MRI scan showing localization and extent of eosinophilic granuloma with bony erosion. Arrow shows the actual pathology, that is, the eosinophilic granuloma.
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fig1
The lateral rectus muscle was not involved and was distinctly visible and separate from the mass (Figure 1).
Immunostain specific S-100 positivity on immunohistochemistry.
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The immunohistochemical studies were positive for S-100 protein and adenosine deaminase (Figure 2).
PET-CT scan with arrows marked showing increased uptake suggestive of increased activity at the site of the eosinophilic granuloma (Langerhans Cell Histiocytosis).
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The PET-CT revealed a single focus of uptake in the lateral wall of the orbit (Figure 3).
Postchemotherapy clinical photograph of the patient localizing the resolution of the site at inferolateral right orbit.
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On completion of three cycles of chemotherapy, a reduction in size of the mass was noticed (Figures 4 and 5).
Postchemotherapy CT scans of the patient.
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fig5
On completion of three cycles of chemotherapy, a reduction in size of the mass was noticed (Figures 4 and 5).