Microscopic examination of extra orbital tissue shows focal loose nodular collections of mononuclear inflammatory cells in the interstitium of skeletal muscle associated with fibrosis and fat infiltration with absence of Ganglion such as cells, atypical cells, specific granulomas or phagocytic cells. Orbital pseudotumor.
Kamili MA, G A, Dar IH, Dar SH, Wazir HS, Qureishi T - Oman journal of ophthalmology (2009). Not Altered. CC.
Idiopathic orbital inflammation aka orbital inflammatory pseudotumor
Sclerosing dacryoadenitis
Orbital myositis
Posterior scleritis