We present a case of malignant lymphoma with onset in the canine fossa, with suborbital neuropathy as the initial symptom. The head and neck region is a frequent site of onset for malignant lymphoma, which sometimes appears as an orbital space-occupying lesion, leading to a diagnosis of orbital apex syndrome or with oculomotor nerve palsy as the initial sign. There have been few reports of malignant lymphomas with suborbital neuropathy as the presenting symptom. In the present case, the only preoperative symptoms were subcutaneous buccal tumor and sensory abnormality in the region supplied by the suborbital nerve; hence, suborbital schwannoma was initially suspected. Diagnosis was difficult. We report this case with a discussion of previously published reports.
