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2.
Nat Genet ; 55(9): 1440-1447, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37537257

RESUMO

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.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Cutâneas , Humanos , Neoplasias Cutâneas/genética , Neoplasias Cutâneas/patologia , Carcinoma de Células Escamosas/genética , Queratinócitos , Raios Ultravioleta/efeitos adversos , Mutação
3.
Orbit ; 42(4): 389-396, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36082627

RESUMO

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.


Assuntos
Doenças Palpebrais , Oftalmopatia de Graves , Humanos , Ácido Hialurônico , Estudos Retrospectivos , Oftalmopatia de Graves/tratamento farmacológico , Oftalmopatia de Graves/cirurgia , Doenças Palpebrais/tratamento farmacológico , Doenças Palpebrais/cirurgia , Pálpebras/cirurgia , Transtornos da Visão
4.
Ophthalmic Plast Reconstr Surg ; 37(1): 12-17, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32358236

RESUMO

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.


Assuntos
Ectrópio , Entrópio , Obstrução dos Ductos Lacrimais , Ducto Nasolacrimal , Humanos , Qualidade de Vida
5.
Eye (Lond) ; 35(4): 1261-1267, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32651544

RESUMO

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.


Assuntos
Blefaroplastia , Blefaroptose , Blefaroptose/cirurgia , Estudos Transversais , Humanos , Músculos Oculomotores/cirurgia , Estudos Retrospectivos , Resultado do Tratamento
6.
Facial Plast Surg ; 36(5): 592-601, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33368082

RESUMO

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.


Assuntos
Blefaroplastia , Procedimentos de Cirurgia Plástica , Cirurgia Plástica , Povo Asiático , Blefaroplastia/efeitos adversos , Pálpebras/cirurgia , Humanos
7.
Ophthalmic Plast Reconstr Surg ; 36(4): 349-354, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31809482

RESUMO

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.


Assuntos
Derme Acelular , Exenteração Orbitária , Idoso , Idoso de 80 Anos ou mais , Aloenxertos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Transplante de Pele
8.
Br J Ophthalmol ; 103(10): 1453-1459, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-30612095

RESUMO

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.


Assuntos
Hemangioma Cavernoso/radioterapia , Doenças do Nervo Óptico/radioterapia , Neoplasias Orbitárias/radioterapia , Radiocirurgia/métodos , Adolescente , Adulto , Idoso , Criança , Feminino , Hemangioma Cavernoso/diagnóstico por imagem , Hemangioma Cavernoso/patologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Doenças do Nervo Óptico/diagnóstico por imagem , Doenças do Nervo Óptico/patologia , Neoplasias Orbitárias/diagnóstico por imagem , Neoplasias Orbitárias/patologia , Estudos Retrospectivos , Acuidade Visual/fisiologia , Campos Visuais/fisiologia , Adulto Jovem
9.
Br J Ophthalmol ; 103(2): 264-268, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-29680804

RESUMO

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.


Assuntos
Adenoma Pleomorfo/diagnóstico por imagem , Neoplasias Oculares/diagnóstico por imagem , Doenças do Aparelho Lacrimal/diagnóstico por imagem , Neoplasias Epiteliais e Glandulares/diagnóstico por imagem , Adenoma Pleomorfo/patologia , Adulto , Neoplasias Oculares/patologia , Feminino , Humanos , Doenças do Aparelho Lacrimal/patologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Neoplasias Epiteliais e Glandulares/patologia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos
10.
Br J Ophthalmol ; 103(2): 269-273, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-29706604

RESUMO

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.


Assuntos
Células Matadoras Naturais/patologia , Linfoma de Células T/patologia , Neoplasias do Seio Maxilar/patologia , Neoplasias Bucais/patologia , Neoplasias Nasais/patologia , Neoplasias Orbitárias/patologia , Adolescente , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Estudos de Coortes , Intervalo Livre de Doença , Feminino , Humanos , Linfoma de Células T/tratamento farmacológico , Linfoma de Células T/mortalidade , Masculino , Neoplasias do Seio Maxilar/tratamento farmacológico , Neoplasias do Seio Maxilar/mortalidade , Pessoa de Meia-Idade , Neoplasias Bucais/tratamento farmacológico , Neoplasias Bucais/mortalidade , Neoplasias Nasais/tratamento farmacológico , Neoplasias Nasais/mortalidade , Neoplasias Orbitárias/tratamento farmacológico , Neoplasias Orbitárias/mortalidade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento , Adulto Jovem
11.
J Neurosurg ; 131(3): 667-675, 2018 09 14.
Artigo em Inglês | MEDLINE | ID: mdl-30215555

RESUMO

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.


Assuntos
Endoscopia/métodos , Oftalmopatias/prevenção & controle , Osso Frontal , Neoplasias Orbitárias/cirurgia , Osso Esfenoide , Adolescente , Adulto , Idoso , Estudos de Coortes , Oftalmopatias/diagnóstico , Oftalmopatias/etiologia , Pálpebras/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Orbitárias/complicações , Neoplasias Orbitárias/patologia , Resultado do Tratamento , Adulto Jovem
12.
Ophthalmic Plast Reconstr Surg ; 34(6): 587-593, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29672347

RESUMO

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.


Assuntos
Oftalmopatia de Graves/tratamento farmacológico , Imunossupressores/administração & dosagem , Injeções Intraoculares/métodos , Triancinolona Acetonida/administração & dosagem , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
13.
Ophthalmology ; 125(6): 938-944, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29398084

RESUMO

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.


Assuntos
Órbita/diagnóstico por imagem , Fraturas Orbitárias/diagnóstico por imagem , Fraturas Orbitárias/cirurgia , Adolescente , Adulto , Diplopia/fisiopatologia , Feminino , Humanos , Hipestesia/fisiopatologia , Masculino , Pessoa de Meia-Idade , Transtornos da Motilidade Ocular/fisiopatologia , Procedimentos Cirúrgicos Oftalmológicos , Órbita/fisiopatologia , Fraturas Orbitárias/fisiopatologia , Estudos Prospectivos , Procedimentos de Cirurgia Plástica , Tomografia Computadorizada por Raios X/métodos , Adulto Jovem
14.
Ophthalmic Plast Reconstr Surg ; 34(6): 536-543, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29419638

RESUMO

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.


Assuntos
Fraturas Orbitárias/cirurgia , Próteses e Implantes , Implantes Absorvíveis , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Diplopia/etiologia , Enoftalmia/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos da Motilidade Ocular/etiologia , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Adulto Jovem
15.
J Craniofac Surg ; 29(3): 712-716, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29381625

RESUMO

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.


Assuntos
Hemangioma Cavernoso/diagnóstico por imagem , Imageamento por Ressonância Magnética , Neoplasias Orbitárias/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adulto , Feminino , Hemangioma Cavernoso/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Órbita/diagnóstico por imagem , Neoplasias Orbitárias/epidemiologia
16.
Am J Ophthalmol ; 186: 41-46, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29197538

RESUMO

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.


Assuntos
Imageamento por Ressonância Magnética/métodos , Estadiamento de Neoplasias/métodos , Neurilemoma/diagnóstico , Nervo Oftálmico/diagnóstico por imagem , Órbita/inervação , Neoplasias Orbitárias/diagnóstico , Tomografia Computadorizada por Raios X/métodos , Adulto , Diagnóstico Diferencial , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neurilemoma/cirurgia , Procedimentos Cirúrgicos Oftalmológicos , Órbita/diagnóstico por imagem , Neoplasias Orbitárias/cirurgia , Prognóstico , Estudos Retrospectivos , Fatores de Tempo
17.
Am J Ophthalmol ; 181: 134-139, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28705661

RESUMO

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.


Assuntos
Dacriocistorinostomia/métodos , Obstrução dos Ductos Lacrimais/terapia , Ducto Nasolacrimal/cirurgia , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Feminino , Humanos , Intubação , Obstrução dos Ductos Lacrimais/diagnóstico , Masculino , Pessoa de Meia-Idade , Ducto Nasolacrimal/patologia , Estudos Retrospectivos , Elastômeros de Silicone
18.
Orbit ; 36(2): 84-90, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28388349

RESUMO

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.


Assuntos
Carcinoma/patologia , Neoplasias Nasofaríngeas/patologia , Neoplasias Orbitárias/patologia , Adulto , Idoso , Carcinoma/epidemiologia , Carcinoma/radioterapia , Neoplasias Oculares/epidemiologia , Neoplasias Oculares/patologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Carcinoma Nasofaríngeo , Neoplasias Nasofaríngeas/epidemiologia , Neoplasias Nasofaríngeas/radioterapia , Invasividade Neoplásica , Neoplasias Orbitárias/epidemiologia , Lesões por Radiação/epidemiologia , Lesões por Radiação/patologia , Radioterapia/efeitos adversos , Estudos Retrospectivos , Transtornos da Visão/diagnóstico
19.
Artigo em Inglês | MEDLINE | ID: mdl-25671096

RESUMO

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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