"T2/FLAIR: hypointense signal in the mass itself. Perilesional hyperintense signal is expected."
"Orbital blastomycosis, less commonly known as Gilchrist disease, is an orbital infection from the fungus Blastomyces dermatidis. Blastomycosis is typically acquired via inhalation of conidia (spores). Blastomycosis is a systemic pyogranulomatous infection."
"The majority of cases will begin and remain as pulmonary blastomycosis. However, in ~40% of cases, patients will develop extrapulmonary disease usually. Extrapulmonary manifestations usually occur via haematogenous dissemination, typically involving the skin, bone, urogenital systems, and, less commonly, the central nervous system. Specifically, orbital blastomycosis may present as eye pain, ocular gaze abnormalities, decreased visual acuity, proptosis, and/or ptosis 2,3. Patients with orbital blastomycosis may develop orbital apex syndrome, where the infection compresses structures at the orbital apex 2."
"The majority of cases will begin and remain as pulmonary blastomycosis. However, in ~40% of cases, patients will develop extrapulmonary disease usually. Extrapulmonary manifestations usually occur via haematogenous dissemination, typically involving the skin, bone, urogenital systems, and, less commonly, the central nervous system. Specifically, orbital blastomycosis may present as eye pain, ocular gaze abnormalities, decreased visual acuity, proptosis, and/or ptosis 2,3. Patients with orbital blastomycosis may develop orbital apex syndrome, where the infection compresses structures at the orbital apex 2."