Examination reveals soft tissue mass lesions involving
the retroconic, and extraconal spaces of both orbits. Small soft tissue
lesion is seen near the posterior wall of the right maxillary sinus. Minimal
enhancement is noted on contrast examination.
B-cell Non Hodgkin's
Classification of malignant lymphoma continues to evolve from increased
understanding of normal lymphoid cell differentiation as well as from
observations on behavior and response to therapy within lymphoma subtypes.
B-cell differentiation of malignant cells accounts for the majority of
lymphomas. Locations such as stomach, intestine, skin, endocrine and salivary
glands, as well as central nervous system, account for the majority of
sites in extranodal presentations. Primary soft tissue lymphoma is quite
rare, the reported frequency depending on the strictness of definition.
If the lymphoma remains localized to the soft tissue site, the prognosis
is unusually good.
The incidence of orbital involvement by lymphoma is approximately 1%.
The lacrimal gland is most often involved. Lymphoma can also present as
an infiltrative process in the retroconic spaces that obliterate th
Bhujang Pai, Hinduja Hospital, Mumbai