Nippon Ganka Gakkai Zasshi
Department of Ophthalmology, Tokyo Medical University, Japan.
Published: August 2008
Purpose: We treated a case of orbital granular cell tumor originating from the inferior oblique muscle.
Case: A 55-year-old woman complained of diplopia and induration of the left lower eyelid. Downward rotation of the left eye was restricted. Imaging study results including MRI were compatible with orbital tumor. The tumor was removed by an anterior approach under local anesthesia. Because the tumor was continuous with the inferior oblique muscle, the inferior oblique muscle was unavoidably resected. A histopathological examination showed acidophilic granulation in the cytoplasm of the tumor cells. Striae of the muscle were present at the part of the tumor connecting with the inferior oblique muscle. The S-100 protein test was positive for tumor cells in immunochemical staining. According to these histopathological findings, a diagnosis of orbital granular cell tumor originating from the inferior oblique muscle was made. There has been no local recurrence after a follow-up of 2 years.
Conclusion: Orbital granular cell tumor is known to arise from extraocular muscles, and to progress in an invasive manner. When the orbital granular cell tumor is removed, pain control, vagovagal reflexes such as bradycardia, and the possibility of resection of extraocular muscles should be considered.
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Radiol Bras
December 2024
Faculdade de Medicina de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (Unesp), Botucatu, SP, Brazil.
Objective: To assess the prevalence of changes on computed tomography (CT) in Graves' orbitopathy (GO) and to correlate those changes with disease activity, as well as with clinical and biochemical variables.
Materials And Methods: This was a retrospective study, conducted at a tertiary hospital, of clinical, biochemical, and imaging data from consecutive patients with GO who underwent at least one orbital CT scan between July 2012 and December 2020. A single observer quantified the thickness of the extraocular muscles and the degree of proptosis.
Sci Data
January 2025
Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
This study presents TOM500, a comprehensive multi-organ annotated orbital magnetic resonance imaging (MRI) dataset. It includes clinical data, T2-weighted MRI scans, and corresponding segmentations from 500 patients with thyroid eye disease (TED) during their initial visit. TED is a common autoimmune disorder with distinct orbital MRI features.
View Article and Find Full Text PDFNucl Med Commun
February 2025
Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Purpose: To study the feasibility and value of assessing patients with Graves' orbitopathy (GO) in 99mTc-diethylenetriamine pentaacetic acid (DTPA) orbital single photon emission computed tomography/computed tomography (SPECT/CT) with extraocular muscle maximum standardized uptake value (SUVmax).
Methods: A total of 235 patients underwent 99mTc-DTPA orbital SPECT/CT, including 176 patients with GO and 59 patients with Graves' disease (GD) as controls. The SUVmax of extraocular muscles, including right medial rectus muscle (RMR), right lateral rectus muscle (RLR), left medial rectus muscle (LMR), left lateral rectus muscle (LLR), was compared between groups, correlation analyses with clinical activity scores (CAS) and serological indices was performed, and the diagnostic efficacy was evaluated using receiver operating characteristic curves.
Ophthalmic Plast Reconstr Surg
January 2025
Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, California, U.S.A.
Purpose: Phenylephrine testing prior to Müller muscle conjunctival resection has traditionally been used to predict postoperative outcomes. The purpose of this study is to determine if preoperative phenylephrine testing impacts postoperative changes in eyelid position.
Methods: In this multicenter cross-sectional cohort study, 270 eyelids of participants with involutional ptosis and levator function >12 mm who underwent Müller muscle conjunctival resection were divided into 2 comparison groups.
Science
January 2025
Department of Otolaryngology, Department of Neuroscience and Physiology, and the Neuroscience Institute, NYU Grossman School of Medicine, New York, NY, USA.
Vertebrates stabilize gaze using a neural circuit that transforms sensed instability into compensatory counterrotation of the eyes. Sensory feedback tunes this vestibulo-ocular reflex throughout life. We studied the functional development of vestibulo-ocular reflex circuit components in the larval zebrafish, with and without sensation.
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