case_images: PMC2636039_01
case_images: Clinical appearance, A and B - at presentation, C - immediately
  after incision biopsy and D - 2.5 months after starting therapy
case_images: IndianJOphthalmol-56-68-g001.jpg
case_images: PMC2636039_01_IndianJOphthalmol-56-68-g001.jpg
case_images: F1
case_images: Lid edema, prominent vessels over the lids and lagophthalmos were more pronounced in the left than the right eye [Fig. 1]. Proptosis completely disappeared, the exposure keratitis of the left eye healed and disc edema totally subsided 2.5 months after starting therapy [Fig. 1].
case_images: Computerized tomography showing erosion of medial orbital
  walls into nose and lateral wall of the nose bordering infratemporal
  fossa on both sides
case_images: IndianJOphthalmol-56-68-g002.jpg
case_images: PMC2636039_01_IndianJOphthalmol-56-68-g002.jpg
case_images: F2
case_images: Computerized tomography [Fig. 2] showed diffuse infiltration of the orbit and erosion of medial wall of the orbit bordering the nose and lateral wall of the nose bordering the infratemporal fossa on both sides.
case_images: H and E staining A (10X), B (40X) showing solid sheets of
  predominantly undifferentiated cells along with a few interspersed
  elongated and fusiform cells with central nucleus and eosinophilic
  cytoplasm. The undifferentiated cells are round to elongated with large
  pleomorphic nucleus and prominent single to multiple nucleoli with
  numerous atypical mitosis. Few vacuolated cells are also seen. Positive
  Leukocyte Common Antigen (C) and Vimentin stains (D)
case_images: IndianJOphthalmol-56-68-g003.jpg
case_images: PMC2636039_01_IndianJOphthalmol-56-68-g003.jpg
case_images: F3
case_images: Histopathological sections [Fig. 3] study showed solid sheets of predominantly undifferentiated cells along with a few interspersed elongated and fusiform cells with central nucleus and eosinophilic cytoplasm. It was negative for all markers except Vimentin and Leukocyte Common Antigen [Fig. 3].