Publications by authors named "Chloe Khoo"

Anti-vascular endothelial growth factor (anti-VEGF) injections are the most effective treatment for exudative age-related macular degeneration (AMD). However, both bevacizumab and ranibizumab have been reported to cause submacular hemorrhage (SMH) in the treatment of exudative AMD. Aflibercept has also been reported to cause SMH but only in the treatment of polypoidal choroidal vasculopathy and not exudative AMD.

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Introduction: Despite remarkably improved outcomes with immune checkpoint inhibition, many patients with metastatic melanoma will eventually require further therapy. Chemotherapy has limited activity when used first-line but can alter the tumour microenvironment and does improve efficacy when used in combination with immunotherapy in lung cancer. Whether chemotherapy after checkpoint inhibitor failure has relevant activity in patients with metastatic melanoma is unknown.

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Background: Combination ipilimumab and nivolumab is approved for several malignancies. Toxicity most often occurs 6-10 weeks into treatment. Whether very early toxicity is harder to manage or influences efficacy is unknown.

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Purpose: To determine outcomes after photodynamic therapy (PDT) for choroidal metastasis.

Design: Retrospective interventional case series.

Participants: Forty-three patients with 40 eyes harboring 58 choroidal metastases.

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Immune checkpoint inhibitors (ICI) and tyrosine kinase inhibitors (TKI) have transformed the management of many malignancies. Although rare, immune-mediated myocarditis presents unique clinical challenges due to heterogenous presentation, potential life-threatening consequences, and the time-critical need to differentiate it from other causes of cardiac dysfunction. Increasingly, TKI are being combined with ICI to promote immune modulation and improve efficacy.

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Purpose: To investigate features and outcomes of Coats disease by patient age.

Methods: Patients with Coats disease from 1973 to 2018 were evaluated based on age category at presentation (3 years or younger vs older than 3 to 10 years vs older than 10 years).

Results: There were 351 eyes of 351 patients with Coats disease diagnosed (2 vs 6 vs 27 years, P < .

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Purpose: To evaluate the effects of clinical features associated with enucleation in eyes with Coats disease.

Methods: The medical records of all patients with Coats disease at the Ocular Oncology, Wills Eye Hospital from November 1, 1973, to July 31, 2018, were reviewed retrospectively. The clinical features pertaining to need for ultimate enucleation and time to enucleation were compared.

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Background: Despite classic teaching that intracranial metastases typically arise at the gray-white matter junction, small intracranial melanoma metastases (IMM) are frequently observed at the interface between the cortex and leptomeninges (ie, "corticomeningeal interface"), suggesting possible leptomeningeal origin.

Methods: MRI brain examinations of melanoma patients treated at a specialist oncology center from July 2015 to June 2017 were retrospectively reviewed. The MRI examination on which IMM were first visible was identified, utilizing 1 mm volumetric postcontrast imaging prior to local therapy.

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Purpose: The aim of this study was to investigate factors predictive of subretinal fluid (SRF) resolution in Coats disease.

Design: Retrospective cohort study.

Methods: Institutional review board-approved review of patients diagnosed with Coats disease demonstrating SRF (stage 3-5) at a single center from November 1973 to July 2018 with comparison of eyes that had resolution of SRF to those in which SRF persisted.

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A 70-year-old woman underwent adjuvant chemotherapy with dose-dense doxorubicin and cyclophosphamide for early breast cancer. After her fourth cycle of chemotherapy, she developed severe fatigue and cough with rapid-onset hypoxic respiratory failure. Investigations demonstrated extensive bilateral consolidation with positive bronchial washings for by polymerase chain reaction (PCR).

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Purpose: To assess visual outcomes of Coats disease by classification stage.

Methods: A retrospective review was conducted on consecutive patients with Coats disease, classified according to Shields classification and with available Snellen visual acuity before and after treatment.

Results: There were 160 eyes with Coats disease (stage 1 (n=2) vs stage 2A (n=17) vs stage 2B (n=22) vs stage 3A1 (n=26) vs stage 3A2 (n=40) vs stage 3B (n=42) vs stage 4 (n=9) vs stage 5 (n=2)).

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Purpose: Immune checkpoint inhibitors (ICI) and BRAF and MEK inhibitors (BMi) have improved survival in metastatic melanoma (MM). However, the experience of long-term responders remains undescribed. This study characterised survivorship issues faced by long-term responders to ICI or BMi.

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BRAF and CRAF are critical components of the MAPK signaling pathway which is activated in many cancer types. In approximately 1% of melanomas, BRAF or CRAF are activated through structural arrangements. We describe here a metastatic melanoma with a GOLGA4-RAF1 fusion and pathogenic variants in CTNNB1 and CDKN2A.

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Importance: Rheumatic immune-related adverse events (irAEs) occur in approximately 10-20% of anti-programmed death 1 (anti-PD1)-treated cancer patients. There are limited data on the natural history, optimal treatment and long-term oncological outcomes of patients with rheumatic irAEs.

Objective: The objective of the study was to describe the spectrum and natural history of rheumatic irAEs and the potential impact of rheumatic irAEs and immunomodulators on anti-PD1 tumour efficacy.

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Background: Anti-programmed cell death protein 1/programmed death ligand 1 (PD-1/PD-L1) immunotherapy is now routinely used to treat several cancers. Clinical trials have excluded several populations, including patients with solid organ transplant, HIV infection and hepatitis B/C infection. We examined the safety outcomes of these populations treated with anti-PD-1/PD-L1 treatment in a multicentre retrospective study.

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Purpose: Amantadine use has been temporally associated with bilateral corneal edema in a series of cases; however, its pathophysiological mechanisms have yet to be elucidated. We sought to rule out subclinical Fuchs dystrophy as a contributor, characterize its pattern of corneal edema, and describe the long-term outcome of concurrent topical steroids while resuming amantadine.

Patient And Methods: After a 44-year-old woman presented with new acute onset bilateral corneal edema, amantadine was discontinued, with clinical improvement.

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Purpose: To study image quality and artifacts seen on optical coherence tomography angiography (OCTA).

Methods: Sixty-five consecutive patients with unilateral posterior uveal melanoma treated with plaque radiotherapy had OCTA during follow-up. Optical coherence tomography angiography was performed on both the affected and fellow eye.

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There are several mimickers of choroidal melanoma. We report a patient with recent family stress who developed blurred vision to 20/50 OD and was found to have unilateral central serous chorioretinopathy and a coincidental choroidal nevus. After 1 year without resolution of the subretinal fluid, the patient was referred for our opinion.

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A 32-year-old man with active unilateral group D retinoblastoma that was recurrent following external beam radiotherapy was treated with intra-arterial chemotherapy, leading to tumor regression. Additional plaque radiotherapy and intravitreal chemotherapy were required for complete control. Final visual acuity was 20/40.

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Purpose: To study the parafoveal capillary density using optical coherence tomography angiography (OCTA) in eyes treated with plaque radiotherapy.

Research Design: Retrospective comparative case series.

Participants: Ten patients treated with plaque radiotherapy for choroidal melanoma without evident radiation maculopathy on ophthalmoscopy or optical coherence tomography were imaged with OCTA.

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Purpose: To study radiation retinopathy after plaque radiotherapy of choroidal melanoma using optical coherence tomography angiography.

Methods: Retrospective comparative analysis of 65 consecutive patients with choroidal melanoma, treated with standard dose I-125 plaque radiotherapy and imaged with optical coherence tomography angiography. A comparison of irradiated versus contralateral, nonirradiated (control) eyes was performed.

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Purpose: Intraarterial chemotherapy for retinoblastoma is usually reserved for infants aged 3 months or older because of the intricacy of the newborn vascular anatomy making the procedure technically challenging. The authors report a successful case of intraarterial chemotherapy performed in a 2-month-old infant using a minimal exposure approach.

Methods: Case report.

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Purpose: To describe solitary idiopathic choroiditis in the setting of extensive animal exposure.

Methods: A 56-year-old asymptomatic female equestrian with an extensive history of exposure to horses and dogs and a trapper of wild animals and rodents was discovered to have an amelanotic choroidal mass in the macular region and referred for suspicious atypical nevus.

Results: Funduscopy revealed a deep yellow mass with overlying retinal pigment epithelial thinning and without visible subretinal fluid or lipofuscin.

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