Publications by authors named "Vasilios P Papastefanou"

Purpose: To explore the genetic background of choroidal and ciliary body melanoma among children and young adults, with special focus on BAP1 germline variants in this age group.

Methods: Patients under the age of 25 and with confirmed choroidal or ciliary body melanoma were included in this retrospective, multicenter observational study. Nuclear BAP1 immunopositivity was used to evaluate the presence of functional BAP1 in the tumor.

View Article and Find Full Text PDF

We describe a case of bilateral spontaneous corneal perforation secondary to pellucid marginal degeneration and present the associated swept-source anterior segment optical coherence tomography (SS-ASOCT) findings and management principles used. A 47-year-old woman presented with ocular pain, redness, foreign body sensation and clear discharge in the right eye in 2017 and with very similar symptoms in 2019 in the left eye. Clinically she had a corneal perforation at the inferior cornea with associated loss of anterior chamber volume.

View Article and Find Full Text PDF

Background: Diagnosis of small choroidal melanoma is mainly based on tumour thickness, subretinal fluid, or lipofuscin pigment. Ultra-wide-field imaging (UWF) allows depiction of choroidal lesions through a red (RC) and a green channel (GC). Aim of the study was to determine the utility of this tool in the detection of small choroidal melanoma.

View Article and Find Full Text PDF

Background: To investigate the role of eye clinic liaison officers (ECLOs) in the United Kingdom and analyse patients' demographics and services provided.

Methods: This is a retrospective observational study. Data were collected from the Royal National Institute of Blind People for ECLOs in Wales, Scotland, Northern Ireland and England for the first quarter of 2015.

View Article and Find Full Text PDF

Background: The problem of access to medical information, particularly in low-income countries, has been under discussion for many years. Although a number of developments have occurred in the last decade (e.g.

View Article and Find Full Text PDF

Purpose: To determine the long-term therapeutic outcome for different treatments of circumscribed choroidal hemangioma (CCH).

Design: Retrospective observational study.

Subjects: Patients with newly diagnosed CCH.

View Article and Find Full Text PDF

Purpose: To describe the 3 distinct patterns of choroidal nevi in swept-source (SS) OCT and apply that classification to a cohort of consecutive choroidal nevi. Also, we aim to describe the findings of these lesions in near-infrared reflectance (NIR) at different wavelengths (820 and 1050 nm).

Design: Single-center, retrospective, observational study.

View Article and Find Full Text PDF

Assessing the visual capabilities that remain to children affected with bilateral retinoblastoma has relied on psychophysical tests based on recognition visual acuity. We report a case in which fundus-driven perimetry and swept-source optical coherence tomography was performed in a patient with a macular tumor in the remaining eye as a novel way of further assessing fixation after oncological disease and treatment.

View Article and Find Full Text PDF

Purpose: Uveal melanoma is the most common primary intraocular malignancy. Extrascleral extension (ESE) is rare, but associated with an increased rate of orbital recurrence and an overall poor prognosis. Clinical studies show low rates when compared with histological studies.

View Article and Find Full Text PDF

Purpose: Congenital retinal macrovessels (CRM) represent rare aberrant vasculature of the retinal vessels that can supply or drain the macula. In this report, the optical coherence tomography angiography features of a congenital retinal macrovessel are discussed.

Methods: The history and examination findings are presented alongside swept-source OCT angiography with corresponding B scan and en face OCT imaging.

View Article and Find Full Text PDF

Background: Medulloepithelioma is a rare congenital neoplasm derived from precursors of the nonpigmented ciliary epithelium of the ciliary body. The average patient age at clinical presentation is 3.8 years.

View Article and Find Full Text PDF

Purpose: Multimodality image analysis of two cases of torpedo maculopathy.

Methods: Imaging with fundus photography, autofluorescence (AF), swept-source optical coherence tomography (OCT), en face OCT, and OCT angiography.

Results: The basal diameter of the torpedo lesions was 1 mm × 2 mm.

View Article and Find Full Text PDF

Vismodegib is proven to be effective in the treatment of locally advanced and metastatic basal cell carcinoma, but evidence of resistance is beginning to emerge. A case of advanced recurrent periocular basal cell carcinoma which responded dramatically to vismodegib after 3 months but recurred after 9 months due to drug resistance, eventually requiring orbital exenteration, is presented. The mechanism of vismodegib resistance is discussed.

View Article and Find Full Text PDF

Purpose: To correlate the metabolic activity of primary uveal melanoma on positron emission tomography (PET)/CT scan with known clinical and pathological prognostic factors.

Methods: A retrospective cohort analysis of eyes enucleated for uveal melanoma that underwent preoperative imaging with a PET/CT scan was performed. Tumour dimensions were recorded and classified using Collaborative Ocular Melanoma Study (COMS) and American Joint Committee on Cancer (AJCC) Tumour - Nodes - Metastases (TNM) criteria.

View Article and Find Full Text PDF

Lymphoma of the lacrimal sac is uncommon and usually presents as a lacrimal sac mass, against a background of known systemic lymphoma. This study presents the case of a 70-year-old man with small lymphocytic lymphoma of the lacrimal sac and widespread systemic involvement presenting as common canalicular obstruction without a palpable mass or systemic symptoms.

View Article and Find Full Text PDF

Aim: To compare retinal pigment epithelium-Bruch's membrane (RPE-BM) complex thickness in patients with early and intermediate dry age-related macular degeneration (AMD) and age-matched controls using spectral domain optical coherence tomography (SD-OCT).

Methods: In this retrospective, cross-sectional study, 25 patients with dry AMD and 25 controls were recruited. SD-OCT scans were manually segmented by two independent investigators.

View Article and Find Full Text PDF

Aims: To present the outcomes of a series of patients with choroidal neovascular membrane (CNV) secondary to a choroidal naevus and report the presence of outer retinal tubulation.

Methods: In this retrospective series, patients underwent a complete clinical and imaging assessment (fundus photo, fluorescein angiography and optical coherence tomography) and were observed or managed with intravitreal anti-VEGF injections dependent on whether visual acuity was affected.

Results: Seventeen patients were included in this study.

View Article and Find Full Text PDF

Background/Aims. To report the safety and efficacy of strontium (Sr(90)) beta radiotherapy as adjuvant treatment for conjunctival melanoma. Methods.

View Article and Find Full Text PDF

Uveal melanoma is the most common primary intraocular malignancy and the leading primary intraocular disease which can be fatal in adults. In this paper epidemiologic, pathogenetic, and clinical aspects of uveal melanoma are discussed. Despite the advance in local ocular treatments, there has been no change in patient survival for three decades.

View Article and Find Full Text PDF
Article Synopsis
  • * Ten groups of male rats were given a toxic dose of APAP; their liver and blood were analyzed at various time points to assess liver injury, regeneration, and VEGF expression through biochemical and histological methods.
  • * The study found that liver regeneration occurred over 24-192 hours post-APAP administration, with VEGF showing peaks in expression at specific time intervals, indicating its crucial role in the liver’s recovery process following injury.
View Article and Find Full Text PDF