How would you describe the location of this left orbital tumour?
Upper lateral quadrant, extraconal, involving the lacrimal gland and conjunctiva.
What is the most common type of lymphoma in this location?
B-cell NHL (orbital adnexal MALT lymphoma).
Largely extraconal mass lesion in the upper outer left orbital quadrant with low signal on T1 and T2-weighted images, and homogeneous contrast enhancement. Involvement of the lacrimal gland and the adjacent conjunctiva. The lateral rectus muscle is displaced medially.