Fractures of the orbit are frequently noted in craniomaxillofacial trauma. The complexity of the anatomy and the proximity to various vital structures often complicates the surgical management of these fractures. The authors have thus attempted to review the literature on anatomy of the bony orbit and its soft tissue envelope in a simplified manner with due emphasis on surgical anatomy and exploration of the orbit with a surgical perspective. The contents of this narrative literature review may be useful for young maxillofacial surgeons and will aid in the process of management of orbital fractures.

Esthetic and functional surgeries in the periocular region fall into the domain of oculoplastic, or plastic and reconstructive surgery and otorhinolaryngology. Oculoplasty is the largest surgical spectrum in ophthalmology including eyelids, orbits and the lacrimal system. Our purpose was to study the frequency of eyelid, lacrimal and orbital (oculoplastic) surgery at the CHU IOTA.
METHODS: Retrospective medical chart review of all the patients who underwent oculoplastic surgery was conducted from October 2015 to September 2016.
RESULTS: A total of 233 patients were included with 52% female and 48% male. Patients were 37 years old on average. In total, the surgery was performed on the eyelids in83 cases (35.6%), the orbits in 113 cases (48.5%) and the lachrymal system in 37 cases (15.9%).Eyelid surgery commonly resulted from eye trauma (43,3%), followed by malpositions (30,2%). Mutilating surgery accounted for 92% of the orbital surgery. External dacryocystorhinostomy was the main lacrimal surgery (42%) followed by canalicular lacerations 25%.
CONCLUSIONS: Oculoplasticsurgeryoccupies an important place in the surgical activities of the ophthalmologic University hospital despite a larger volume for cataractsurgery. Our studydoesn\'t highlight the outcome of the surgery itself but the epidemiology to help decision makers in their eye health policy including the reduction of mutilating surgery and oculoplastic training.
La chirurgie esthétique et fonctionnelle de la région périoculaire est du domaine de l\'oculoplastie, ainsi que de la chirurgie plastique et reconstructive et de l\'otorhinolaryngologie. L\'oculoplastie constitue le plus large éventail chirurgical en ophtalmologie regroupant la paupière, l\'orbite et le système lacrymal.
OBJECTIVE: Etudier la fréquence des procédures chirurgicales orbito-palpébrales et lacrymales (oculoplasties) dans un centre de troisième référence.
UNASSIGNED: Il s\'agissait d\'une étude rétrospective des dossiers de patients opérés pour pathologies oculoplastiques d\'octobre 2015 à septembre 2016.
UNASSIGNED: Au total 233 patients ont été inclus dont 52% de sexe féminin et 48% de sexe masculin avec un âge moyen de 37 ans ; parmi lesquels 83 cas (35,6%) de chirurgie palpébrale, 113 cas (48,5%) de chirurgie orbitaire et 37 cas (15,9%) chirurgie lacrymale.La chirurgie palpébrale était dominée parréparationdesplaies traumatiques (43,3%), suivi des malpositions (30,2%). La chirurgie mutilante constituait 92% de la chirurgie orbitaire. La dacryocystorhinostomie par voie externe était la principale chirurgie lacrymale soit 42%, suivie des lacérations canaliculaires 25%.
CONCLUSIONS: Notre étude ne met pas en exergue le résultat de la chirurgie elle-même, mais l\'épidémiologie du traitement chirurgical afin d\'aider les décideurs dans leur politique de santé oculaire notamment sur la réduction de la chirurgie mutilante et la formation oculoplastique.

Fetal magnetic resonance imaging (MRI) may reveal sonographically occult ocular abnormalities. When discovered, acquired causes and genetic associations must be sought.
We aim to evaluate a fetal cohort with orbit and/or globe malformations to determine whether there are imaging patterns that suggest the underlying cause.
We searched all fetal MRI reports performed at an academic children\'s hospital over 9 consecutive years for orbit and/or globe abnormalities. Each positive exam and all follow-up MRIs were evaluated for interocular distance, globe size, shape and signal, and brain malformations. Genetic and clinical diagnoses were recorded from the medical record.
Seventy-six of 3,085 fetuses (2.5%) were diagnosed with ocular and/or globe abnormalities; 50% had postnatal follow-up MR exams, all confirming the fetal MRI findings. Ninety-two percent (70/76) had concurrent brain malformations. Sixty-seven percent (51/76) were diagnosed with an underlying disorder and 39% of these were genetically proven. The most common diagnoses with ocular globe abnormalities included CHARGE (coloboma of the eye, heart anomaly, choanal atresia, retardation and genital and ear anomalies) syndrome, trisomy 13 syndrome, dystroglycanopathy, holoprosencephaly and diencephalic-mesencephalic junction dysplasia. Genetic diagnoses were more likely with ocular globe abnormalities than isolated orbital abnormalities (P=0.04). Sixty-seven percent of fetuses with ocular calcifications, hemorrhage and/or lens abnormalities had potential maternal risk factors (P=0.03).
Malformed ocular globes are associated with brain malformations and genetic abnormalities. Ocular calcifications, hemorrhage and/or lens abnormalities may be associated with maternal risk factors. Genetic work-up should be considered when an ocular globe size or shape abnormality is detected.

Treatment strategies and recommended surveillance imaging differ for head and neck cancers depending on subsite and neoplasm type, and pose confusion for referring physicians and interpreting radiologists. The superior soft tissue resolution offered by magnetic resonance imaging is most useful in the surveillance of cancers with high propensities for intraorbital, intracranial, or perineural disease spread, which most commonly include those arising from the sinonasal cavities, nasopharynx, orbits, salivary glands, and the skin. This article discusses recommended surveillance protocoling and reviews treatment approaches, common posttreatment changes, and pearls for identifying disease recurrence in a subsite-based approach.

OBJECTIVE: T2/FLAIR hyperintensity of the optic nerve/optic nerve head has been described as a sensitive finding in idiopathic intracranial hypertension using post-contrast 3D-T2/FLAIR imaging. The purpose of this study is to assess whether hyperintensity on non-enhanced 2D-T2/FLAIR imaging occurs more likely in diseased patients than controls and to evaluate the relationship between FLAIR signal and visual parameters MATERIALS AND METHODS: A retrospective case-control study was performed of patients with idiopathic intracranial hypertension and controls who underwent orbital MRI. Three neuroradiologists reviewed the FLAIR images, subjectively evaluating for hyperintense signal within the optic nerves/optic nerve heads using a 5-point Likert Scale. Quantitative assessment of optic nerve signal using regions of interests was performed. Clinical parameters were extracted. The diagnostic performance was evaluated, and Spearman correlation calculated to assess the relationship between FLAIR signal and visual outcomes.
RESULTS: The sensitivity of abnormal FLAIR signal within the optic nerves and optic nerve heads in patients with idiopathic intracranial hypertension ranged from 25-54% and 4-29%, respectively, with specificities ranging from 67-92% and 83-100%. Quantitative assessment revealed a significant difference in CNR between cases and controls in the left posterior optic nerve (p=.002). A positive linear relationship existed between abnormal optic nerve head signal and papilledema grade (OD: p=.02, OS: p=.008) but not with other visual parameters.
CONCLUSIONS: T2/FLAIR hyperintensity in the optic nerve/optic nerve head may support the diagnosis of idiopathic intracranial hypertension but its absence should not dissuade it. If present, abnormal signal in the optic nerve head correlates with papilledema.

BACKGROUND: Neurolymphomatosis involving the cranial nerves (CNs) is rare. We sought a better understanding of the primary disease sites and patterns of spread in neurolymphomatosis of the orbit and retro-orbital cranial nerves.
METHODS: Patients with lymphoma and MRI evidence of neurolymphomatosis of CN II, III, IV, V1, or V2 were retrospectively reviewed. Demographics and primary disease site and sites of neurolymphomatosis on MRI were recorded. Wilcoxon rank sum test was used to compare number of sites of neurolymphomatosis with lymphoma type and survival.
RESULTS: The study included 18 patients. The most frequent types of lymphoma were diffuse large B-cell (DLBCL) (n = 9) and marginal zone (n = 3). In 9 patients, lymphoma presented as a mass (n = 7) or infiltrative disease (n = 2) directly involving the orbit; in 6, a maxillofacial mass spread directly to CNs; and in 3, lymphoma at remote sites spread to orbital CNs. Overall, 81 sites of neurolymphomatosis were noted. The most common sites were the maxillary nerve (V2) including at the infraorbital fissure or foramen rotundum (17 patients; 19 nerves), pterygopalatine fossa (16 patients; 19 nerves), and cavernous sinus (9 patients; 12 nerves). Number of sites of neurolymphomatosis was significantly lower for DLBCL than for other lymphoma types (p = 0.007). Number of sites of neurolymphomatosis did not affect survival (p = 0.26). The mean interval between the pathologic diagnosis and MRI documentation of the full extent of neurolymphomatosis was 39 days after pathologic diagnosis.
CONCLUSIONS: Based on our study results, neurolymphomatosis in the orbit appears to be frequently associated with an orbital and/or maxillofacial mass and commonly involves CN V2, the pterygopalatine fossa, and the cavernous sinus. DLBCL may be associated with fewer sites of neurolymphomatosis than other lymphomas. In patients with lymphoma, a systematic search for neurolymphomatosis is imperative for early detection.

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Cachexia is a significant contributor to cancer mortality as it is responsible for up to 30% of cancer deaths. Magnetic resonance imaging offers a noninvasive approach to detect features of cachexia. T1-weighted images of cachectic patients have a \"pseudo fat-saturated\" appearance secondary to disappearance of subcutaneous and fascial fat throughout the body, as well as fat in the bone marrow. Orbital fat remains preserved until late disease. We present 2 cases with these classic imaging findings of cancer cachexia in the subcutaneous tissues of the head, neck, and spine. This imaging phenomenon is often misinterpreted by radiologists and may lead to delayed diagnosis or unnecessary repeat imaging.

We present an interesting case of biopsy-proven multiorgan metastatic invasive lobular carcinoma to the orbits and kidney, initially presenting in a 76-year-old woman with diplopia. Invasive lobular carcinoma is a less common subtype of breast cancer and is often difficult to detect on imaging with an unusual metastatic pattern when compared to invasive ductal carcinoma. Metastatic invasive lobular carcinoma most frequently involves the orbits, ovaries, gastrointestinal tract, retroperitoneum and bone. Disease involving these organ systems detected on imaging should raise concern for metastatic disease when appropriate.

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