Antonio A V Cruz1, Fabiana C P Valera, Lucas Carenzi, Fernando Chahud, Gyl E Barros, Jorge Elias. 1. *School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil; †King Khaled Eye Specialist Hospital, Johns Hopkins University; ‡Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, §Department of Pathology, and ‖Department of Radiology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.
Abstract
BACKGROUND: To describe a case series of nasal natural killer (NK)/T-cell lymphoma (NKTL) with orbital and central nervous system extension. METHODS: This is a retrospective study. The medical records of 9 patients with a diagnosis of NKTL were reviewed. All patients had a positive biopsy for CD3, CD56, T-cell-restricted intracellular antigen-1, and granzyme expression and CT imaging of nose, sinuses, orbits, and brain. Five patients were also examined with MRI. RESULTS: Orbital extension occurred in 6 patients. All had extraocular muscle enlargement and 5 showed signs of perineural spread. CONCLUSIONS: NKTL is a polymorphous disease. Extraocular muscle involvement and perineural spread are overlooked features that explain dissemination of the tumor to both the orbit and the central nervous system.
BACKGROUND: To describe a case series of nasal natural killer (NK)/T-cell lymphoma (NKTL) with orbital and central nervous system extension. METHODS: This is a retrospective study. The medical records of 9 patients with a diagnosis of NKTL were reviewed. All patients had a positive biopsy for CD3, CD56, T-cell-restricted intracellular antigen-1, and granzyme expression and CT imaging of nose, sinuses, orbits, and brain. Five patients were also examined with MRI. RESULTS: Orbital extension occurred in 6 patients. All had extraocular muscle enlargement and 5 showed signs of perineural spread. CONCLUSIONS:NKTL is a polymorphous disease. Extraocular muscle involvement and perineural spread are overlooked features that explain dissemination of the tumor to both the orbit and the central nervous system.