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2.
Nat Genet ; 55(9): 1440-1447, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37537257

RESUMEN

The incidence of keratinocyte cancer (basal cell and squamous cell carcinomas of the skin) is 17-fold lower in Singapore than the UK1-3, despite Singapore receiving 2-3 times more ultraviolet (UV) radiation4,5. Aging skin contains somatic mutant clones from which such cancers develop6,7. We hypothesized that differences in keratinocyte cancer incidence may be reflected in the normal skin mutational landscape. Here we show that, compared to Singapore, aging facial skin from populations in the UK has a fourfold greater mutational burden, a predominant UV mutational signature, increased copy number aberrations and increased mutant TP53 selection. These features are shared by keratinocyte cancers from high-incidence and low-incidence populations8-13. In Singaporean skin, most mutations result from cell-intrinsic processes; mutant NOTCH1 and NOTCH2 are more strongly selected than in the UK. Aging skin in a high-incidence country has multiple features convergent with cancer that are not found in a low-risk country. These differences may reflect germline variation in UV-protective genes.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias Cutáneas , Humanos , Neoplasias Cutáneas/genética , Neoplasias Cutáneas/patología , Carcinoma de Células Escamosas/genética , Queratinocitos , Rayos Ultravioleta/efectos adversos , Mutación
3.
Orbit ; 42(4): 389-396, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36082627

RESUMEN

PURPOSE: To evaluate the role of hyaluronic acid (HA) filler injection in the management of upper eyelid retraction (UER) in thyroid eye disease (TED). METHODS: Retrospective interventional series of all patients with TED who had undergone HA injection, from February 2011 to April 2013 by a single surgeon (Y-DK) in a tertiary medical institution. Outcome measures: Mean margin reflex distance 1 (MRD1) pre- and post-filler. RESULTS: There was a total of 13 patients and 17 eyes included in the study. The injection dosage for 15 eyes was 0.5 ml, one patient had 0.35cc on the right eye and 0.65cc on the left eye. Mean MRD1 at presentation was 6.21 mm. There was a mean decrease in MRD1 of 2.01 mm (p < .001) at 1 month post filler, 2.06 mm (p < .001) at 6 months post filler and 2.61 mm (p < .001) at 1 year post filler. There was no correlation between pre-filler MRD1 and change in MRD1 at various time points post-filler, nor any correlation between pre-filler upper scleral show (USS) and change in USS post-filler. There was also no correlation found between clinical activity score (CAS) and change in MRD1, as well as duration of thyroid eye disease (TED) and change in MRD1. Complications included mild upper lid lumpiness on downgaze (n = 4, 23.5%) which improved but persisted with time. There were no untoward intravascular or vision-threatening complications. CONCLUSION: Transconjunctival HA injection is an effective treatment option for TED-related UER in both active and inactive TED patients in an East Asian population, with a potentially long-lasting effect.


Asunto(s)
Enfermedades de los Párpados , Oftalmopatía de Graves , Humanos , Ácido Hialurónico , Estudios Retrospectivos , Oftalmopatía de Graves/tratamiento farmacológico , Oftalmopatía de Graves/cirugía , Enfermedades de los Párpados/tratamiento farmacológico , Enfermedades de los Párpados/cirugía , Párpados/cirugía , Trastornos de la Visión
4.
Eye (Lond) ; 35(4): 1261-1267, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32651544

RESUMEN

BACKGROUND/OBJECTIVES: To compare postoperative lagophthalmos after maximal levator resection (MLR) and frontalis suspension (FS) in congenital ptosis patients with poor levator function (LF). METHODS: A cross-sectional study was performed to compare postoperative outcomes in patients with preoperative LF ≤ 4 mm who had undergone MLR or FS at a single tertiary institution, and who had visited the outpatient clinic between February 2017 and August 2018. Main outcome measures were as follows: (1) Preoperative LF and margin reflex distance 1 (MRD1), (2) Postoperative MRD1, lagophthalmos and grade of superficial punctate keratopathy (SPK). RESULTS: Our study comprised 152 eyelids of 122 patients. There were 71 eyelids in the MLR group and 81 eyelids in the FS group. The MLR group had comparable mean postoperative MRD1 (2.8 ± 0.8 mm) to the FS with autogenous fascia lata (AFL) group (3.0 ± 0.7 mm), while the FS with preserved fascia lata (PFL) group had the lowest mean postoperative MRD1 (2.2 ± 1.0 mm). The PFL group had significantly less lagophthalmos (0.6 ± 1.0 mm) than the AFL (1.9 ± 1.4 mm) and maximal levator resection (1.9 ± 1.7 mm) groups. In the MLR group, there was no significant difference in postoperative surgical measurements between the LF 0-2 mm group and LF 2.5-4 mm group in terms of exposure keratopathy, degree of lagophthalmos and MRD1. CONCLUSION: MLR is an effective alternative to FS in congenital ptosis patients with poor levator function, with the risk of postoperative lagophthalmos related to postoperative MRD1 rather than preoperative LF.


Asunto(s)
Blefaroplastia , Blefaroptosis , Blefaroptosis/cirugía , Estudios Transversales , Humanos , Músculos Oculomotores/cirugía , Estudios Retrospectivos , Resultado del Tratamiento
5.
Ophthalmic Plast Reconstr Surg ; 37(1): 12-17, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32358236

RESUMEN

PURPOSE: To conduct a literature review on postoperative quality of life in oculoplastic patients. METHODS: The authors conducted a database search to evaluate the evidence available for the change in quality of life after oculoplastic surgery. RESULTS: There was a wide disparity of evidence available for different oculoplastic conditions. Certain conditions, such as nasolacrimal duct obstruction, were well-researched while other conditions, such as epiblepharon, had little to no research supporting improvement in quality of life after surgery. The scales used to measure quality of life displayed heterogeneity. CONCLUSION: There is a lack of published evidence concerning postoperative quality of life in patients with certain oculoplastic conditions such as brow ptosis, entropion, ectropion, epiblepharon, and orbital wall fracture. There is a need to standardize the quality of life data collection tools and scoring systems to allow better comparison and scrutiny of the current literature.


Asunto(s)
Ectropión , Entropión , Obstrucción del Conducto Lagrimal , Conducto Nasolagrimal , Humanos , Calidad de Vida
6.
Facial Plast Surg ; 36(5): 592-601, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33368082

RESUMEN

Double eyelid surgery remains one of the most popular aesthetic surgeries, especially among East Asian populations. Complications related to double eyelid surgery can be divided into various categories: (1) patient dissatisfaction, (2) problems with the eyelid crease, (3) problems with the eyelid height, (4) suture-related complications, and (5) complications related to eyelid surgery in general. As with all eyelid surgeries, it is important to understand and appreciate the normal and abnormal function and anatomy of the Asian eyelid to reduce the risk of complications. It is also important to recognize the various complications and their underlying causes so that the surgeon can confidently revise the surgery to achieve optimal outcomes.


Asunto(s)
Blefaroplastia , Procedimientos de Cirugía Plástica , Cirugía Plástica , Pueblo Asiatico , Blefaroplastia/efectos adversos , Párpados/cirugía , Humanos
7.
Ophthalmic Plast Reconstr Surg ; 36(4): 349-354, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31809482

RESUMEN

PURPOSE: To evaluate the surgical outcome and safety of acellular human dermal allograft as a new lining material to the exposed orbit after exenteration. METHODS: Retrospective case series of patients who underwent orbital exenteration followed by reconstruction with meshed-type acellular dermal allograft from 2009 to 2018 in a single tertiary institution. RESULTS: There were 14 eyes (2 right, 12 left) of 14 patients (6 men, 8 women). Mean age at operation was 69.1 ± 16.5 years. Indication for surgery was malignancy in all patients. One patient underwent subtotal exenteration, while the rest underwent total exenteration. SureDerm Meshed was used in 12 patients, AlloDerm Meshed in 1, and CGDerm Meshed in 1. Mean follow-up period was 12.1 months. Full or nearly full epithelialization occurred in 10 of 14 patients (71.4%) at 1 month and 9 of 12 patients (75.0%) at 3 months. There was delayed epithelialization in 3 patients due to poor wound care (n = 1), adjuvant radiotherapy (n = 1), and adjuvant radiotherapy followed by cerebrospinal fluid leak (n = 1). CONCLUSIONS: Meshed acellular human dermal allograft showed good success in reconstruction after orbital exenteration and may be considered as an alternative lining material to split-thickness skin graft after orbital exenteration.


Asunto(s)
Dermis Acelular , Evisceración Orbitaria , Anciano , Anciano de 80 o más Años , Aloinjertos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Trasplante de Piel
8.
Br J Ophthalmol ; 103(10): 1453-1459, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-30612095

RESUMEN

PURPOSE: To evaluate the efficacy and safety of multisession gamma knife radiosurgery (GKRS) for orbital apex venous cavernous malformation causing optic neuropathy. METHODS: Retrospective cohort study in a single tertiary institution from January 2007 to December 2016 on patients who underwent multisession GKRS for orbital apex venous cavernous malformations causing optic neuropathy. RESULTS: There were 12 patients included in our study. The mean age was 40.2±14.5 years, and men comprised 66.7% (n=8). Decrease in visual acuity (83.3%) was the most common symptom at presentation. The mean clinical follow-up was 28.5 months. Ten (83.3%) of the 12 patients had improvement in best corrected visual acuity. Of the 10 patients with pre-existing relative afferent pupillary defect (RAPD), 6 (60%) had complete resolution of RAPD. Of the 12 patients with visual field defect, 7 (58.3%) had complete resolution, 3 (25%) had partial improvement, while 2 (16.7%) remained unchanged due to optic atrophy from long-standing compressive optic neuropathy. Mean proptosis reduced from 2.3±1.7 mm pre-GKRS to 0.5±1.3 mm post-GKRS (p=0.005). Tumour shrinkage was observed in all patients. The mean tumour volume at the time of GKRS was 3104 mm3 (range 221-8500 mm3), which reduced to 658 mm3 (range 120-3350 mm3) at last follow-up. None of the patients experienced GKRS-related ocular morbidity during the follow-up period. CONCLUSION: Multisession GKRS has shown to be an effective and safe option for the treatment of orbital apex venous cavernous malformations causing optic neuropathy, with significant improvement in ophthalmic outcomes and reduction in tumour volume.


Asunto(s)
Hemangioma Cavernoso/radioterapia , Enfermedades del Nervio Óptico/radioterapia , Neoplasias Orbitales/radioterapia , Radiocirugia/métodos , Adolescente , Adulto , Anciano , Niño , Femenino , Hemangioma Cavernoso/diagnóstico por imagen , Hemangioma Cavernoso/patología , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Enfermedades del Nervio Óptico/diagnóstico por imagen , Enfermedades del Nervio Óptico/patología , Neoplasias Orbitales/diagnóstico por imagen , Neoplasias Orbitales/patología , Estudios Retrospectivos , Agudeza Visual/fisiología , Campos Visuales/fisiología , Adulto Joven
9.
Br J Ophthalmol ; 103(2): 269-273, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-29706604

RESUMEN

AIMS: To evaluate the clinical characteristics and treatment outcomes of natural killer/T-cell lymphoma (NKTL) involving the ocular adnexa. METHODS: Retrospective, comparative, observational case series. A total of 350 patients with NKTL, including 27 patients with NKTL involving the ocular adnexa from 1999 to 2016. The patients were grouped into two groups: group 1 comprised patients presenting with ophthalmic symptoms, and group 2 comprised patients presenting with symptoms from other organs but subsequently developed ophthalmic involvement. RESULTS: Group 1 comprised 12 patients (44.4%) and group 2 comprised 15 (55.6%). Mean duration of symptoms in group 1 was 1.8±1.2 months, while the time from diagnosis of NKTL to development of ophthalmic symptoms in group 2 was 45.3±65.6 months. Periorbital swelling was the most common presenting symptom in both groups (83.3% in group 1 and 73.3% in group 2). Symptoms mimicking cellulitis and pseudotumor were present in 50.0% and 16.7% of cases, respectively. The 5-year overall survival rate was 18.5% in group 1 and 26.4% in group 2, while the 5-year progression-free survival rate was 0% and 13.3%, respectively. CONCLUSIONS: Our series is to our knowledge the largest cohort study on NKTL reported to date and demonstrates that ocular adnexal NKTL is a rare but seriously fatal disease. It is characterised by acute inflammatory signs as present in as many as two-thirds of our patients in this series. It should be considered as a differential diagnosis in patients presenting with rapidly progressing proptosis and diagnosed promptly for optimal management.


Asunto(s)
Células Asesinas Naturales/patología , Linfoma de Células T/patología , Neoplasias del Seno Maxilar/patología , Neoplasias de la Boca/patología , Neoplasias Nasales/patología , Neoplasias Orbitales/patología , Adolescente , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Estudios de Cohortes , Supervivencia sin Enfermedad , Femenino , Humanos , Linfoma de Células T/tratamiento farmacológico , Linfoma de Células T/mortalidad , Masculino , Neoplasias del Seno Maxilar/tratamiento farmacológico , Neoplasias del Seno Maxilar/mortalidad , Persona de Mediana Edad , Neoplasias de la Boca/tratamiento farmacológico , Neoplasias de la Boca/mortalidad , Neoplasias Nasales/tratamiento farmacológico , Neoplasias Nasales/mortalidad , Neoplasias Orbitales/tratamiento farmacológico , Neoplasias Orbitales/mortalidad , Estudios Retrospectivos , Tasa de Supervivencia , Resultado del Tratamiento , Adulto Joven
10.
Br J Ophthalmol ; 103(2): 264-268, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-29680804

RESUMEN

AIMS: To investigate the clinical and imaging features of primary and recurrent lacrimal gland pleomorphic adenoma (LGPA), as well as lacrimal gland malignant epithelial tumours (LGMET). METHODS: Retrospective comparative case series from September 2000 to September 2016 in a single tertiary institution. Medical records of cases with histopathologically proven primary LGPA (PLGPA), recurrent LGPA (RLGPA) and LGMET were reviewed. RESULTS: Sixty-four patients with LGPA (55 primary and nine recurrent) and 36 patients with LGMET underwent surgical excision in the study period. There was no significant difference in terms of age, gender or laterality. In terms of symptom duration, that of LGMET (7.1 months) was significantly shorter than PLGPA (23.9 months), which in turn was significantly shorter than RLGPA (127.1 months). Proptosis was the most common presenting symptom among all three groups. On CT, LGMET and RLGPA were significantly more likely to have ill-defined margins (p<0.001) and be heterogeneous (p<0.001) than PLGPA. RLGPAs (56%) were significantly more likely to have calcification than LGMET (34%), which in turn was more likely to have calcification than PLGPA (13%); LGMET (40%) and RLGPA (33%) were significantly more likely to have bony invasion than PLGPA (2.2%). On MRI, LGMETs (55%) were significantly more likely to have a tail or wedge sign indicating infiltration into the posterior orbit than PLGPA (0%) or RLGPA (0%). CONCLUSION: Our study adds important information regarding differentiating clinical and radiological features between malignant and benign epithelial lacrimal gland tumours that would aid in their management.


Asunto(s)
Adenoma Pleomórfico/diagnóstico por imagen , Neoplasias del Ojo/diagnóstico por imagen , Enfermedades del Aparato Lagrimal/diagnóstico por imagen , Neoplasias Glandulares y Epiteliales/diagnóstico por imagen , Adenoma Pleomórfico/patología , Adulto , Neoplasias del Ojo/patología , Femenino , Humanos , Enfermedades del Aparato Lagrimal/patología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Neoplasias Glandulares y Epiteliales/patología , Estudios Retrospectivos , Tomografía Computarizada por Rayos X/métodos
11.
J Neurosurg ; 131(3): 667-675, 2018 09 14.
Artículo en Inglés | MEDLINE | ID: mdl-30215555

RESUMEN

OBJECTIVE: Cranioorbital tumors are complex lesions that involve the deep orbit, floor of the frontal bone, and lesser and greater wing of the sphenoid bone. The purpose of this study was to describe the clinical and ophthalmological outcomes with an endoscopic transorbital approach (TOA) in the management of cranioorbital tumors involving the deep orbit and intracranial compartment. METHODS: The authors performed endoscopic TOAs via the superior eyelid crease incision in 18 patients (16 TOA alone and 2 TOA combined with a simultaneous endonasal endoscopic resection) with cranioorbital tumors from September 2016 to November 2017. There were 12 patients with sphenoorbital meningiomas. Other lesions included osteosarcoma, plasmacytoma, sebaceous gland carcinoma, intraconal schwannoma, cystic teratoma, and fibrous dysplasia. Ten patients had primary lesions and 8 patients had recurrent tumors. Thirteen patients had intradural lesions, while 5 had only extradural lesions. RESULTS: Of 18 patients, 7 patients underwent gross-total resection of the tumor and 7 patients underwent planned near-total resection of the tumor, leaving the cavernous sinus lesion. Subtotal resection was performed in 4 patients with recurrent tumors. There was no postoperative CSF leak requiring reconstruction surgery. Fourteen of 18 patients (77.8%) had preoperative proptosis on the ipsilateral side, and all 14 patients had improvement in exophthalmos; the mean proptosis reduced from 5.7 ± 2.7 mm to 1.5 ± 1.4 mm. However, some residual proptosis was evident in 9 of the 14 (64%). Ten of 18 patients (55.6%) had preoperative optic neuropathy, and 6 of them (60.0%) had improvement; the median best-corrected visual acuity improved from 20/100 to 20/40. Thirteen of 18 patients showed mild ptosis at an immediate postoperative examination, all of whom had a spontaneous and complete recovery of their ptosis during the follow-up period. Three of 7 patients showed improvement in extraocular motility after surgery. CONCLUSIONS: Endoscopic TOA can be considered as an option in the management of cranioorbital tumors involving complex anatomical areas, with acceptable sequelae and morbidity.


Asunto(s)
Endoscopía/métodos , Oftalmopatías/prevención & control , Hueso Frontal , Neoplasias Orbitales/cirugía , Hueso Esfenoides , Adolescente , Adulto , Anciano , Estudios de Cohortes , Oftalmopatías/diagnóstico , Oftalmopatías/etiología , Párpados/cirugía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Orbitales/complicaciones , Neoplasias Orbitales/patología , Resultado del Tratamiento , Adulto Joven
12.
Ophthalmic Plast Reconstr Surg ; 34(6): 587-593, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29672347

RESUMEN

PURPOSE: To evaluate the role of transconjunctival triamcinolone acetonide (TA) injection in the management of upper eyelid retraction in thyroid eye disease. METHODS: Retrospective interventional review of all patients who underwent transconjunctival TA injection (40 mg/mL) for thyroid eye disease-related upper eyelid retraction from January 2010 to December 2016 in a single tertiary institution. The present study comprised 2 groups: Patients receiving only TA injection (group 1), and patients receiving both TA injection and other immunosuppressive therapy (group 2). RESULTS: There were a total of 99 patients and 135 eyes. Group 1 comprised of 36 eyes (26.7%), while group 2 comprised 99 (73.3%). Normalization or improvement of margin reflex distance 1 was seen in 77.4% and 97.2% of group 1 patients at early and late review, respectively, and 77.6% and 87.8% of group 2, respectively. Absence or improvement in International Thyroid Eye Disease Society inflammatory index was seen in 83.9% and 86.1% of group 1 at early and late review, respectively, and 71.9% and 76.8% of group 2, respectively. Both active (73.7%) and inactive (79.3%) groups showed good early success for improvement in margin reflex distance 1, with increased late success and no significant difference between the groups. For International Thyroid Eye Disease Society inflammatory index, the active group had better early and late success than the inactive group, with the difference being significant (P = 0.002) for late success. CONCLUSIONS: Transconjunctival TA injection is an effective treatment option for thyroid eye disease-related upper eyelid retraction, as a primary and adjunctive treatment, in both active and inactive thyroid eye disease patients.


Asunto(s)
Oftalmopatía de Graves/tratamiento farmacológico , Inmunosupresores/administración & dosificación , Inyecciones Intraoculares/métodos , Triamcinolona Acetonida/administración & dosificación , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven
13.
Ophthalmology ; 125(6): 938-944, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29398084

RESUMEN

PURPOSE: To determine if conservatively treated blowout fractures of the orbit undergo spontaneous improvement based on radiologic findings. DESIGN: Prospective, noncomparative series. PARTICIPANTS: Patients with conservatively treated orbital blowout fractures in a single tertiary institution from 2012 through 2016 with initial and follow-up computed tomography (CT) scans. METHODS: Comparison of initial and follow-up CT to assess for smoothening of bony contour, joining of bony edges, reduction in herniation of orbital contents, and new bone formation. Orbital and fracture volumes were calculated using a 3-dimensional reconstruction software program (3D Workstation; TeraRecon, Foster City, CA). MAIN OUTCOME MEASURES: Change in bony contour, new bone formation, and decrease in orbital and fracture volumes. RESULTS: Our study comprised 41 patients and 44 orbits, with 38 unilateral and 3 bilateral cases. Most were men (65.9%; n = 27), and the mean age was 34.3±13.5 years. The mean time from injury to follow-up scan was 4.6 months (range, 1-15 months). All orbits showed changes in bony contour from initial to follow up CT, including smoothening of the orbital contour (88.6%), joining of bony edges (90.9%), and reduction in herniation of orbital contents (65.9%). Most of the orbits (n = 41; 93.2%) showed features of neobone formation. Of the 44 orbits, 91.4% showed a decrease in orbital volume, whereas 94.3% showed a decrease in fracture volume. The reduction in volume was statistically significant for both orbital (from 23.7±4.0 to 21.8±3.9 ml) as well as fracture (from 1.2±0.8 to 0.7±0.6 ml) volumes from initial to follow-up scans, respectively (P < 0.001). CONCLUSIONS: A large proportion of patients showed improvement in radiologic findings despite being treated conservatively. This highlights the spontaneous improvement that can occur in untreated blowout fractures not just clinically, but radiologically, in terms of soft tissue and bony findings.


Asunto(s)
Órbita/diagnóstico por imagen , Fracturas Orbitales/diagnóstico por imagen , Fracturas Orbitales/cirugía , Adolescente , Adulto , Diplopía/fisiopatología , Femenino , Humanos , Hipoestesia/fisiopatología , Masculino , Persona de Mediana Edad , Trastornos de la Motilidad Ocular/fisiopatología , Procedimientos Quirúrgicos Oftalmológicos , Órbita/fisiopatología , Fracturas Orbitales/fisiopatología , Estudios Prospectivos , Procedimientos de Cirugía Plástica , Tomografía Computarizada por Rayos X/métodos , Adulto Joven
14.
Ophthalmic Plast Reconstr Surg ; 34(6): 536-543, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29419638

RESUMEN

PURPOSE: To compare the outcomes of bioresorbable and permanent implants in the reconstruction of isolated orbital floor blowout fractures. METHODS: Retrospective series of all patients who had orbital floor fracture repair in a single tertiary trauma center from January 2005 to December 2014. The authors reviewed the case notes and CT scans of patients with orbital floor fracture repair with either bioresorbable or permanent implants. Main outcome measures were enophthalmos, diplopia, and ocular motility restriction 1.5 years after fracture repair. Implant-related complications were collected for analysis. RESULTS: There were a total of 88 patients in our study. Bioresorbable implants were used in 48 patients (54.5%) while 40 patients had permanent implants (45.5%). The authors analyzed the implants used in various sizes of orbital fractures: small (<13.3 mm), medium (13.3-20 mm), and large (>20 mm). One and a half years after fracture repair, both groups had comparable clinical outcomes (n = 2 and n = 0 for diplopia for permanent and bioresorbable implant groups, respectively, n = 0 for enophthalmos for both groups and n = 1 for ocular motility limitation for both groups) overall and across all fracture sizes. CONCLUSION: Bioresorbable implants degrade after fracture healing through hydrolysis and promote the gradual transfer of functional forces to healing bone during its disintegration. The clinical outcomes of diplopia, enophthalmos, and ocular motility restriction associated with the use of resorbable implants are comparable to that of permanent implants for all fracture sizes. Their study shows that bioresorbable and permanent implants are equally safe and effective for the treatment of patients with isolated orbital floor blowout fractures.


Asunto(s)
Fracturas Orbitales/cirugía , Prótesis e Implantes , Implantes Absorbibles , Adolescente , Adulto , Anciano , Niño , Preescolar , Diplopía/etiología , Enoftalmia/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Trastornos de la Motilidad Ocular/etiología , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Adulto Joven
15.
J Craniofac Surg ; 29(3): 712-716, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29381625

RESUMEN

Cavernous hemangiomas are the most common benign orbital tumors in the orbit, but radiological differentiation from other solitary orbital masses can still be challenging at times. While there have been previous studies describing the radiological characteristics of cavernous hemangiomas on computed tomography (CT) and magnetic resonance imaging (MRI), there have not been any studies comparing the 2 imaging modalities. The purpose of our study was to evaluate CT and MRI findings of orbital cavernous hemangiomas and compare both modalities.We performed a cross-sectional study of patients with a histopathological diagnosis of cavernous hemangioma over a 20-year period from January 1997 to December 2016 in a single tertiary institution.Our study included 77 patients; mean age was 46.6 ±â€Š11.2 years, and females comprised 68.8%. The lateral orbit (23.4%) was the most common location. The masses were well-defined, with 55.8% being ovoid, 27.3% round, and 16.9% lobulated. The most common enhancement pattern on CT was a small point starting in the periphery, progressing to heterogeneous filling in the late phase. The most common enhancement pattern on MRI was multiple patchy starting points, widespread across the tumor, with a final homogeneous filling in the late phase.Significant differences between CT and MRI were found in terms of area, location, and number of starting points of contrast enhancement in the early phase. We also found that the use of MRI is limited in differentiating fast-filling cavernous hemangiomas from other orbital tumors and in such cases, contrast-enhanced CT would be helpful.


Asunto(s)
Hemangioma Cavernoso/diagnóstico por imagen , Imagen por Resonancia Magnética , Neoplasias Orbitales/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adulto , Femenino , Hemangioma Cavernoso/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Órbita/diagnóstico por imagen , Neoplasias Orbitales/epidemiología
16.
Am J Ophthalmol ; 186: 41-46, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29197538

RESUMEN

PURPOSE: To review the radiological findings of frontal nerve schwannoma of the orbit and determine distinguishing imaging features. DESIGN: Retrospective interventional case series. METHODS: Setting: Single tertiary institution. PERIOD: September 1996 to December 2016. PATIENT POPULATION: Thirteen patients with orbital frontal nerve schwannoma. INTERVENTION: Patients underwent surgical excision following preoperative imaging. MAIN OUTCOME MEASURES: Imaging characteristics on computed tomography (CT) and magnetic resonance imaging (MRI). RESULTS: There were 13 patients with histopathologically proven schwannoma of the frontal nerve. Mean age was 44.4 years and 61.5% were male. The majority (84.6%) of frontal nerve schwannomas extended between the supraorbital notch and superior orbital fissure. The most common shape seen in our patients with frontal nerve schwannoma was a multilobulated "beaded" appearance (46.2%), followed by a dumbbell (30.8%), oval (15.4%), and fusiform (7.7%) shape. On CT imaging, all patients had bony remodeling. Target sign, fascicular sign, and cystic degeneration were seen in 76.9%, 35.8%, and 46.2% of patients, respectively. On radiological-pathologic correlation, the zone of tightly packed cellular solid portion (Antoni A pattern) corresponded to the hypointense area on T2-weighted MRI and the hyperintense area on gadolinium-enhanced T1-weighted MRI. CONCLUSION: Frontal nerve schwannoma should be considered as a differential diagnosis for any superior orbital mass. Our study describes several radiological findings that would point toward its diagnosis, including its multilobulated beaded or dumbbell shape, as well as additional signs such as the target sign, fascicular sign, and cystic degeneration.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Estadificación de Neoplasias/métodos , Neurilemoma/diagnóstico , Nervio Oftálmico/diagnóstico por imagen , Órbita/inervación , Neoplasias Orbitales/diagnóstico , Tomografía Computarizada por Rayos X/métodos , Adulto , Diagnóstico Diferencial , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Neurilemoma/cirugía , Procedimientos Quirúrgicos Oftalmológicos , Órbita/diagnóstico por imagen , Neoplasias Orbitales/cirugía , Pronóstico , Estudios Retrospectivos , Factores de Tiempo
17.
Am J Ophthalmol ; 181: 134-139, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28705661

RESUMEN

PURPOSE: To report the surgical results of canaliculorhinostomy for patients with distal canalicular obstruction and lacking a structurally functional lacrimal sac who would otherwise require a conjunctivodacryocystorhinostomy (CDCR) with Jones tube placement. DESIGN: Retrospective observational case series. METHODS: Setting: Single tertiary institution. PERIOD: November 1994 to June 2011. PATIENT POPULATION: Sixteen patients with canalicular obstruction at or beyond 8 mm from the punctum, with an absent or unidentifiable lacrimal sac. INTERVENTION: Patients underwent canaliculorhinostomy, whereby direct anastomosis of the canaliculi or common canaliculus to the nasal mucosa was performed. MAIN OUTCOME MEASURES: Anatomic and functional success. RESULTS: Our study comprised 16 patients with a mean age of 44.9 ± 21.9 years. Ten (62.5%) were female and 6 (37.5%) male. Mean duration of follow-up was 7.8 years. Causes of an absent or unidentifiable lacrimal sac included previous trauma (n = 8, 50.0%), previous dacryocystorhinostomy (n = 4, 25.0%), chronic dacryocystitis (n = 3, 18.8%), and previous dacryocystectomy (n = 1, 6.2%). Anastomoses between the upper and lower canaliculi and the nasal mucosa was performed in 6 patients, while that between the common canaliculus and nasal mucosa was performed in 10. Anatomic and functional success rates were 87.5% (n = 14) and 81.3% (n = 13), respectively. CONCLUSION: Canaliculorhinostomy has reasonable success rates and provides an effective surgical alternative for a group of patients in whom CDCR with Jones tube placement would otherwise have been indicated.


Asunto(s)
Dacriocistorrinostomía/métodos , Obstrucción del Conducto Lagrimal/terapia , Conducto Nasolagrimal/cirugía , Adolescente , Adulto , Anciano , Niño , Preescolar , Femenino , Humanos , Intubación , Obstrucción del Conducto Lagrimal/diagnóstico , Masculino , Persona de Mediana Edad , Conducto Nasolagrimal/patología , Estudios Retrospectivos , Elastómeros de Silicona
18.
Orbit ; 36(2): 84-90, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28388349

RESUMEN

This article desribes the ophthalmic involvement in patients with nasopharyngeal carcinoma (NPC) pre- and post-treatment. We retrospectively reviewed data for 354 consecutive patients diagnosed with or treated for NPC at a single tertiary centre between April 2007 and July 2015. We identified 27 (7.6%) patients with ophthalmic involvement due to NPC or its treatment. Symptomatic orbital invasion by tumor occurred in 13 of 27 patients (48.1%). The mean age of diagnosis in these patients was 54 years, and 8 (61.5%) had no prior diagnosis of NPC. Ocular signs, but no orbital invasion, was present in 8 patients (29.6%). Incidental orbital involvement was detected on imaging in 2 patients (7.4%). Radiotherapy-related ocular complications affected 4 patients (14.8%). Ophthalmic symptoms from orbital invasion can be the initial presentation of NPC. This disease tends to affect a younger group of patients and early recognition is important to minimize morbidity and mortality.


Asunto(s)
Carcinoma/patología , Neoplasias Nasofaríngeas/patología , Neoplasias Orbitales/patología , Adulto , Anciano , Carcinoma/epidemiología , Carcinoma/radioterapia , Neoplasias del Ojo/epidemiología , Neoplasias del Ojo/patología , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Carcinoma Nasofaríngeo , Neoplasias Nasofaríngeas/epidemiología , Neoplasias Nasofaríngeas/radioterapia , Invasividad Neoplásica , Neoplasias Orbitales/epidemiología , Traumatismos por Radiación/epidemiología , Traumatismos por Radiación/patología , Radioterapia/efectos adversos , Estudios Retrospectivos , Trastornos de la Visión/diagnóstico
19.
Artículo en Inglés | MEDLINE | ID: mdl-25671096

RESUMEN

Elizabethkingia meningoseptica is a nosocomial non-fermenting gram-negative bacillus that has an increasing prevalence in health care settings, especially in intensive care environments. While it has long been recognized as a rare but serious cause of neonatal meningitis and sepsis, its role as a cause of ocular pathology is not well-known. We report the first case of E. meningoseptica endogenous endophthalmitis caused by bacteraemia by the same organism. In view of its aggressiveness and virulence in the eye, and the high rate of misdiagnosis or missed diagnosis of endogenous endophthalmitis especially given its low incidence, we may wish to consider screening all cases of E. menigoseptica bloodstream infections for endophthalmitis in future, similar to how it has become routine to refer all patients with Klebsiella bacteraemia to ophthalmologists for screening for endophthalmitis in our local hospitals.

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