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1.
Cancer Rep (Hoboken) ; 7(1): e1919, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-37849419

RESUMEN

BACKGROUND: Solid evidence of the safety and effectiveness of retinoblastoma (RB) conservative treatment using thermotherapy and systemic chemotherapy with long-term follow-up is scarce, especially in low-resource countries. AIMS: This study examined the outcomes of this treatment and associated predictors in Vietnam to strengthen the current RB treatment protocol focusing on preserving eye and vision in low-resource settings. METHODS AND RESULTS: A prospective cohort study was conducted at Ho Chi Minh City Eye Hospital in Vietnam from 2005 to 2019. All eligible patients with bilateral RB (one eye already removed and another eye classified as group A or B) and without previous treatment were recruited. All patients received thermotherapy and six cycles of systemic three-agent chemotherapy repeated every 4 weeks. A standardized questionnaire was used to collect information on study participants' age, symptoms, tumor characteristics, treatment, and outcomes. Among 50 eyes of all 50 patients with a median age of 9 (4-20) months, 34 eyes were in group B (68%). The median follow-up time was 60 (60-84) months. All 139 preserved tumors regressed mostly to type 4 (70.4%) and type 3 (23.7%) scars. Kaplan-Meier analysis found the overall globe-salvage rate at 5 years of 91.9% (95% CI: 80.1%-97.7%). Most eyes (41/50, 82%, 95% CI: 69.2%-90.2%) had a final visual acuity ≥0.1. The visual acuity is higher when tumors regressed to a type 4 scar (p = .007, AOR = 8.098, 95% CI: 1.79-36.53) which also shows less enucleation than a type 3 scar (p = .002, AOR = 0.06, 95% CI: 0.01-0.37%). Gender effect on visual acuity after treatment was significant and may be due to discrimination. No major complications were recorded. CONCLUSION: Conservative treatment of early-stage RB is safe and effective. Long-term, thorough follow-ups of patients post-treatment are needed. The regression patterns of scars could be a useful indicator of treatment failure.


Asunto(s)
Neoplasias de la Retina , Retinoblastoma , Humanos , Lactante , Retinoblastoma/diagnóstico , Retinoblastoma/tratamiento farmacológico , Neoplasias de la Retina/diagnóstico , Neoplasias de la Retina/tratamiento farmacológico , Cicatriz/patología , Tratamiento Conservador , Estudios Prospectivos , Rayos Láser
2.
Cancer Rep (Hoboken) ; : e1949, 2023 Dec 26.
Artículo en Inglés | MEDLINE | ID: mdl-38146612

RESUMEN

BACKGROUND: In high-income countries, retinoblastoma is curable in more than 95% of cases, whereas in low-income countries, mortality remains high, especially when the diagnosis is made late or the treatment is discontinued. AIMS: To determine the factors associated with adherence to the treatment of retinoblastoma in the Ivory Coast and the Democratic Republic of Congo (DRC). METHODS AND RESULTS: A retro-prospective cohort study was carried out. Data were collected from patient folders and follow-up records of parents. RESULTS: A total of 175 children with retinoblastoma were registered from January 2013 to December 2015. Seventy-six children (43%) were 5 years old and above. Care costs were covered by families in 86.9% of cases. Chemotherapy refusal was recorded in 39 cases (22.3%), and enucleation refusal was recorded in 79 cases (45.1%). After 36 months of follow-up, we recorded 16.6% deaths, 27.4% treatment dropouts, and 18.3% loss to follow-up after treatment. The commonest cause for enucleation refusal was fear of infirmity, while chemotherapy refusal and absconding treatment were due to financial constraints. CONCLUSION: Poor adherence to retinoblastoma management was due to financial constraints, and a lack of knowledge of the disease and its treatment. Family psychosocial support is needed to improve this condition.

3.
Pediatr Hematol Oncol ; 40(3): 203-223, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36369884

RESUMEN

Limited survival data for the six Global Initiative for Childhood Cancer (GICC) priority cancers are available in Africa. Management of pediatric malignancies in Africa is challenging due to lack of resources, setting-specific comorbidities, high rates of late presentation and treatment abandonment. Reporting of outcome data is problematic due to the lack of registries. With the aim of evaluating the feasibility of baseline outcomes for the six index cancers, we present a descriptive analysis of respective survival rates in Africa. The survival rates were between 18% (lower middle-income countries) to 82.3% (upper middle-income countries) for acute lymphoblastic leukemia, between 26.9% (low-income countries) to 77.9% (upper middle-income countries) for nephroblastoma, between 23% (low-income countries) to 100% (upper middle-income countries), for retinoblastoma, 45% (low-income countries) to 95% (upper middle-income countries) for Hodgkin lymphoma and 28% (low-income countries) to 76% (upper middle-income countries) for Burkitt lymphoma. Solutions to improve survival rates and reported outcomes include establishing and funding sustainable registries, training and to actively include all countries in consortia from different African regions.HighlightsContinental differences in childhood cancer management such lack of resources, setting-specific comorbidities, high rates of late presentation and treatment abandonment, present challenges to the achievement of Global Initiative for Childhood Cancer goals.The available data registries do not adequately inform on the true incidences and outcomes of childhood cancers in Africa.The pathophysiology of some childhood cancers in Africa are associated with high-risk prognostic factors.Outcomes can be improved by greater regional collaboration to manage childhood cancer based on local resources and tumor characteristics.Some individual countries have reached the Global Initiative for Childhood Cancer goals for single cancers and it should be possible for more African countries to follow suit.


Asunto(s)
Neoplasias Renales , Neoplasias , Neoplasias de la Retina , Retinoblastoma , Tumor de Wilms , Niño , Humanos , Neoplasias/epidemiología , Neoplasias/terapia , África/epidemiología
4.
Can J Ophthalmol ; 57(1): 8-15, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-33715985

RESUMEN

OBJECTIVE: To evaluate the outcomes of orbital exenteration with temporalis muscle flap repair of the socket and secondary healing of the anterior surface of the flap in ocular, conjunctival, and eyelid malignancies. DESIGN: Retrospective single-centre study. PARTICIPANTS: Consecutive patients who underwent total exenteration for malignancy with temporal muscle flap repair of the socket between December 2009 and January 2016. METHODS: We report the outcomes of this surgical technique in terms of healing without fistula formation and time to epithelialization. RESULTS: Twenty-nine patients underwent surgery using this technique. Diagnoses consisted of 18 conjunctival melanomas, 2 choroidal melanomas, 6 squamous cell carcinomas, 2 sebaceous cell carcinomas, and 1 basal cell carcinoma. Mean age at surgery was 70.7 years and mean follow-up was 27.4 months. On histological analysis, tumour excision was complete in 25 patients, of whom 3 had an orbital recurrence after exenteration (3 conjunctival melanomas). Four patients had incomplete tumour excision, of whom 3 underwent postoperative orbital radiotherapy with no subsequent orbital recurrences. Complete epithelialization of the socket occurred in mean 7.9 weeks (range 2-16 weeks). Flap necrosis occurred in 1 patient after postoperative radiotherapy (with sino-nasal fistula formation); 2 other patients developed sino-orbital fistulas. CONCLUSION: After orbital exenteration, spontaneous epithelialization of the socket may take up to several months. Use of a temporalis muscle flap can reduce the duration of socket healing postoperatively, even if left to heal by secondary intention. This may facilitate early postoperative radiotherapy when indicated. Aesthetic results are acceptable and local surgical complications are rare.


Asunto(s)
Fístula , Melanoma , Procedimientos de Cirugía Plástica , Humanos , Melanoma/diagnóstico , Melanoma/cirugía , Procedimientos de Cirugía Plástica/métodos , Estudios Retrospectivos , Músculo Temporal/cirugía
5.
Nat Commun ; 12(1): 5578, 2021 09 22.
Artículo en Inglés | MEDLINE | ID: mdl-34552068

RESUMEN

Retinoblastoma is the most frequent intraocular malignancy in children, originating from a maturing cone precursor in the developing retina. Little is known on the molecular basis underlying the biological and clinical behavior of this cancer. Here, using multi-omics data, we demonstrate the existence of two retinoblastoma subtypes. Subtype 1, of earlier onset, includes most of the heritable forms. It harbors few genetic alterations other than the initiating RB1 inactivation and corresponds to differentiated tumors expressing mature cone markers. By contrast, subtype 2 tumors harbor frequent recurrent genetic alterations including MYCN-amplification. They express markers of less differentiated cone together with neuronal/ganglion cell markers with marked inter- and intra-tumor heterogeneity. The cone dedifferentiation in subtype 2 is associated with stemness features including low immune and interferon response, E2F and MYC/MYCN activation and a higher propensity for metastasis. The recognition of these two subtypes, one maintaining a cone-differentiated state, and the other, more aggressive, associated with cone dedifferentiation and expression of neuronal markers, opens up important biological and clinical perspectives for retinoblastomas.


Asunto(s)
Células Fotorreceptoras Retinianas Conos/patología , Células Ganglionares de la Retina/metabolismo , Neoplasias de la Retina/clasificación , Retinoblastoma/clasificación , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/metabolismo , Desdiferenciación Celular/genética , Preescolar , Metilación de ADN , Femenino , Expresión Génica , Heterogeneidad Genética , Humanos , Lactante , Masculino , Mutación , Proteína Proto-Oncogénica N-Myc/genética , Metástasis de la Neoplasia , Células Fotorreceptoras Retinianas Conos/metabolismo , Células Ganglionares de la Retina/patología , Neoplasias de la Retina/genética , Neoplasias de la Retina/metabolismo , Neoplasias de la Retina/patología , Retinoblastoma/genética , Retinoblastoma/metabolismo , Retinoblastoma/patología
6.
Pediatr Blood Cancer ; 68(1): e28721, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33098751

RESUMEN

BACKGROUND: Conservative treatments of intraocular retinoblastoma often consist of chemotherapy and focal treatments. The protocols vary and currently may combine two or three drugs, with different number of cycles, associated to the ocular treatments. In case of macular/paramacular involvement, tumor location and retinal scars induced by focal treatments often have a major negative impact on final visual outcome. METHODS: This study aimed to include children affected by bilateral intraocular macular/paramacular retinoblastoma in a prospective phase II study. The protocol consisted of six cycles of a three-drug combination (vincristine, etoposide, carboplatin), and the addition of macula-sparing transpupillary thermotherapy (TTT) to the third cycle. The primary endpoint was the local control rate without external beam radiotherapy (EBR) and/or enucleation. RESULTS: Nineteen patients (26 eyes) were included from July 2004 to November 2009. Thirteen eyes belonged to group V of the Reese-Ellsworth classification and 10 to group D of the International Intraocular Retinoblastoma Classification. Macular/paramacular tumors were treated with chemotherapy alone in nine eyes, and with chemotherapy associated with macula-sparing TTT in 17 eyes. Four eyes experienced macular relapse. At a median follow up of 77 months, 23 eyes (88.5%) were saved without EBR, two were enucleated and one received EBR. The median visual acuity of the 24 saved eyes was 20/50. No severe adverse effect was observed. CONCLUSION: Six cycles of a three-drug combination associated with macula-sparing TTT achieved good tumor control, improved eye preservation rates without EBR, and decreased macular damage, often providing satisfactory visual results with long-term follow up.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Degeneración Macular/tratamiento farmacológico , Neoplasias de la Retina/tratamiento farmacológico , Retinoblastoma/tratamiento farmacológico , Agudeza Visual/efectos de los fármacos , Carboplatino/administración & dosificación , Niño , Preescolar , Etopósido/administración & dosificación , Enucleación del Ojo , Femenino , Estudios de Seguimiento , Humanos , Degeneración Macular/complicaciones , Degeneración Macular/patología , Masculino , Ensayos Clínicos Controlados no Aleatorios como Asunto , Pronóstico , Estudios Prospectivos , Neoplasias de la Retina/complicaciones , Neoplasias de la Retina/patología , Retinoblastoma/complicaciones , Retinoblastoma/patología , Vincristina/administración & dosificación
8.
Pediatr Blood Cancer ; 67(4): e28158, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31904159

RESUMEN

BACKGROUND: The long-term survival of germline retinoblastoma patients is decreased due to the risk of second primary tumors (SPTs) that occur years after the diagnosis of retinoblastoma. This risk is related to genetic predisposition and other factors, such as the treatment of retinoblastoma by external beam radiotherapy (EBRT). PROCEDURE: We studied the incidence, risk factors, and prognosis of specific craniofacial SPTs developed within the margins of radiation field in a cohort of 209 patients with germline retinoblastoma treated with EBRT at our institution between 1977 and 2010. Clinical characteristics, survival, incidence, and histology of craniofacial SPTs were recorded. RESULTS: Fifty-three of the 209 patients developed 60 distinct craniofacial SPTs in irradiated field with a median time from EBRT of 16.9 years (4-35) and a median follow-up of 24.8 years (5.3-40). Osteosarcoma (33.3%) and undifferentiated sarcoma (23.3%) were the more prevalent histological entities. Benign tumors (16.7%) also occurred. The cumulative incidence of craniofacial SPTs reached 32.6% at 35 years after EBRT, and the median survival after diagnosis was five years. In our series, irradiation under 12 months of age, bilateral EBRT, or previous treatment of retinoblastoma with chemotherapy did not significantly increase the risk of craniofacial SPTs. CONCLUSIONS: This work presents a strong argument to avoid EBRT in the management of retinoblastoma and emphasizes the high risk and poor prognosis of specific craniofacial SPTs. This study also points to the question of the need and benefits of special programs for early detection of craniofacial SPTs in survivors of irradiated germline retinoblastoma.


Asunto(s)
Predisposición Genética a la Enfermedad , Células Germinativas/patología , Neoplasias Inducidas por Radiación/etiología , Neoplasias Primarias Secundarias/etiología , Radioterapia/efectos adversos , Neoplasias de la Retina/radioterapia , Retinoblastoma/radioterapia , Adolescente , Adulto , Supervivientes de Cáncer/estadística & datos numéricos , Niño , Preescolar , Femenino , Estudios de Seguimiento , Humanos , Lactante , Masculino , Neoplasias Inducidas por Radiación/patología , Neoplasias Primarias Secundarias/patología , Pronóstico , Neoplasias de la Retina/genética , Neoplasias de la Retina/patología , Retinoblastoma/genética , Retinoblastoma/patología , Estudios Retrospectivos , Tasa de Supervivencia , Adulto Joven
9.
Pediatr Blood Cancer ; 67(1): e27998, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31571399

RESUMEN

BACKGROUND: Retinoblastoma with macroscopic optic nerve (ON) invasion depicted by imaging at diagnosis remains a major problem and carries a poor prognosis. We sought to describe the treatment and outcome of these high-risk patients. METHODS: Retrospective mono-institutional clinical, radiological, and histological review of patients with uni- or bilateral retinoblastoma with obvious ON invasion, defined by radiological optic nerve enlargement (RONE) depicted by computed tomography scan or magnetic resonance imaging (MRI), was performed. RESULTS: Between 1997 and 2014, among the 936 patients with retinoblastoma treated at Institut Curie, 11 had detectable RONE. Retinoblastoma was unilateral in 10 and bilateral in one. Median age at diagnosis was 28 months (range, 11-96). ON enlargement extended to the orbital portion in three patients, to the optic canal in five, to the prechiasmatic portion in two, and to the optic chiasm in one. Nine patients received neoadjuvant chemotherapy and partial response was obtained in all. Enucleation was performed in 10/11 patients-by an anterior approach in three and by anterior and subfrontal approaches in seven. Three patients had a positive ON resection margin (2/3 after primary enucleation). All enucleated patients received adjuvant treatment (conventional chemotherapy: 10, high-dose chemotherapy: seven, radiotherapy: five). Leptomeningeal progression occurred in four patients. Seven are in first complete remission (median follow up: 8 years [3.5-19.4]). CONCLUSION: Neoadjuvant chemotherapy and microscopic complete resection have a pivotal role in the management of retinoblastoma with RONE. MRI is recommended for initial and pre-operative accurate staging. Surgery should be performed by neurosurgeons in case of posterior nerve invasion. Radiotherapy is required in case of incomplete resection.


Asunto(s)
Neoplasias del Nervio Óptico/patología , Nervio Óptico/patología , Neoplasias de la Retina/patología , Retinoblastoma/patología , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Niño , Preescolar , Terapia Combinada , Manejo de la Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Lactante , Imagen por Resonancia Magnética/métodos , Masculino , Invasividad Neoplásica , Neoplasias del Nervio Óptico/diagnóstico por imagen , Neoplasias del Nervio Óptico/terapia , Pronóstico , Neoplasias de la Retina/diagnóstico por imagen , Neoplasias de la Retina/terapia , Retinoblastoma/diagnóstico por imagen , Retinoblastoma/terapia , Estudios Retrospectivos , Tomografía Computarizada por Rayos X/métodos
10.
Ocul Oncol Pathol ; 5(6): 396-401, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31768362

RESUMEN

OBJECTIVES: Iris melanomas represent 2-3% of uveal melanomas; the diffuse variant accounts for approximately 10% of all iris melanomas. Different treatment modalities for diffuse iris melanomas (DIM) have been proposed depending on the local status as well as the age and general condition of the patient. METHODS: This study is a single-centre retrospective case series describing the diagnosis, treatments and outcomes of DIM. Treatment consisted of enucleation or proton beam therapy (PT) of the whole anterior segment. Patients who were treated with PT benefitted from limbal stem cell preservation before irradiation. RESULTS: Between 1996 and 2016, a total of 14 patients with DIM presented to our institution and were included in the database. The global survival was 86%. The median follow-up was 4.6 years (range 4 months to 15 years). Only 1 patient (7%) developed metastatic disease of the DIM (gastric location). No patient developed liver metastasis. Seven patients were treated by enucleation and 7 by PT after limbal stem cell preservation. After a conservative attempt, local tumour recurrence occurred in 2 patients at 2 years, requiring enucleation. The cornea was clear after irradiation in all patients. Cataract (n = 6) and glaucoma (n = 4) were the main complications after irradiation. CONCLUSIONS: DIM is a very rare tumour. The global survival is excellent. Conservative treatment with PT is an efficient alternative to enucleation and allows good local tumour control. Cataract and glaucoma are the main radiation-related complications, but the corneal status was excellent due to the stem cell harvest prior to radiotherapy.

11.
Cancers (Basel) ; 11(8)2019 Jul 24.
Artículo en Inglés | MEDLINE | ID: mdl-31344948

RESUMEN

There is increasing evidence of the survival benefit of treating uveal melanoma in an early stage, however it is important to discuss with the patient the associated risk of visual loss. We investigated visual outcomes for uveal melanomas staged T1 (T1UM) treated by proton beam radiotherapy (PBR) as a function of their distance to fovea-optic disc. This retrospective study included a cohort of 424 patients with T1UM treated with PBR between 1991 and 2010 with at least a 5-year follow-up. Visual acuity (VA) was analyzed for patients with posterior edge of tumor located at ≥3 mm (GSup3) or <3 mm (GInf3) from fovea-optic disc. The mean follow-up duration was 122 months, no tumor recurrence was observed. The mean baseline and final VA were 20/25 and 20/32 for GSup3 (n = 75), and 20/40 and 20/80 for GInf3 (n = 317) respectively. The frequency of a 20/200 or greater visual conservation was 93.2%(CI95%:87.7-99.1) and 60.1%(CI95%:54.9-65.9) for GSup3 and GInf3 respectively. This difference between groups was statistically significant (p < 0.001). The risk factors for significant VA loss (less than 20/200) were GInf3 location (p < 0.001), tumor touching optic disc (p = 0.04), initial VA inferior to 20/40 (p < 0.001), documented growth (p = 0.002), and age greater than 60 years (p < 0.001). In summary, PBR for T1UM yields excellent tumor control and good long-term visual outcomes for tumors located ≥3 mm from fovea-optic disc.

12.
Cancers (Basel) ; 11(6)2019 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-31234340

RESUMEN

Patients with liver metastases of uveal melanoma (LMUM) die from their metastatic evolution within 2 years. We established a nomogram to choose a treatment adapted to life expectancy. From 2002 to 2013, we reviewed 224 patients with LMUM selected by liver MRI. A nomogram was developed based on a Cox model. The predictive performance of the model was assessed according to the C-statistic, Kaplan-Meier curve, and calibration plots. The median follow-up was 49.2 months (range, 0.6-70.9). The survival rates at 6, 12, and 24 months were 0.88 (0.95 CI [0.84-0.93]), 0.68 (0.95 CI [0.62-0.75]), and 0.26 (0.95 CI [0.21-0.33]), respectively. The four factors selected for the nomogram with a worse prognosis were: A disease-free interval between the UM and LMUM groups of less than 6 months (HR = 3.39; 0.95 CI [1.90-6.05]), more than 10 LMUM (HR = 3.95; 0.95 CI [1.97-4.43]), a maximum LMUM of more than 1200 mm2 (HR = 2.47; 0.95 CI [1.53-3.98]), and a lactate dehydrogenase (LDH) value greater than 1.5 (HR = 3.72; 0.95 CI [2.30-6.00]). The model achieved relatively good discrimination and calibration (C-statistic 0.71). This nomogram could be useful for decision-making and risk stratification for therapeutic options.

13.
Am J Ophthalmol ; 202: 100-108, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-30772347

RESUMEN

PURPOSE: To determine the size at which choroidal melanomas can metastasize and to report the characteristics of small fatal choroidal melanomas (SFCM). DESIGN: Retrospective case series. METHODS: Ten ocular oncology services submitted 45 patients with a choroidal melanoma 3 mm or less in thickness and 9 mm or less in largest basal diameter (LBD), when treated, who developed metastases. RESULTS: Median tumor thickness was 2.4 mm (range, 1.0-3.0 mm) and LBD 7.3 mm (range, 3.0-9.0 mm). Of 14 (31%) tumors that were first observed, 12 grew a median of 0.5 mm (range, 0.1-1.2 mm) in thickness and 1.0 mm (range, 0-3.0 mm) in LBD within a median of 7 months; 3 were initially smaller than 3 mm in LBD. Number of risk factors for growth and metastasis was 0 for 4% of the tumors; 60% were over 2 mm in thickness, 63% had subretinal fluid, 84% caused symptoms, 57% had orange pigment, and 92% were within 3 mm of the disc. Local recurrence occurred in 8 of 31 eyes (26%) treated conservatively. Median metastasis-free survival was 4.5 years (range, 0.8-15.7 years). Kaplan-Meier estimate of metastasis developing was 15% (95% confidence interval [CI], 7-26), 51% (95% CI, 36-64) and 85% (95% CI, 71-92) by 2, 5, and 10 years, respectively. By the time of analysis, 37 patients had died of metastasis after a median of 7 months. CONCLUSIONS: Choroidal melanomas less than 3.0 mm in LBD are highly unlikely to metastasize. Risk factors of an SFCM are similar to those for all choroidal melanomas of similar size.


Asunto(s)
Neoplasias de la Coroides/diagnóstico , Coroides/diagnóstico por imagen , Melanoma/diagnóstico , Estadificación de Neoplasias , Encuestas y Cuestionarios , Agudeza Visual , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Coroides/mortalidad , Neoplasias de la Coroides/terapia , Terapia Combinada , Europa (Continente)/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Melanoma/mortalidad , Melanoma/terapia , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia/tendencias , Ultrasonografía
14.
Am J Ophthalmol Case Rep ; 13: 89-92, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30619969

RESUMEN

PURPOSE: To report a case of locally recurrent spindle-cell iris amelanotic melanoma 16 years after proton-beam therapy. OBSERVATIONS: In 2001, a 45-year-old man presented with an amelanotic iris melanoma, extending from the 5 to 10 o'clock positions on his left eye. High-frequency ultrasonography showed extension of melanoma into the ciliary body. He was initially managed with proton-beam therapy (60 Gy delivered in four fractions over four consecutive days) and underwent ocular and systemic examination at regular intervals over the following years. Local tumor control was achieved, and the patient did not develop metastasis during sixteen consecutive years. In 2017, 16 years after he received proton-beam therapy, the patient developed a focal amelanotic lesion strongly suggestive of a local recurrence of iris melanoma, although it extended from the 1 to 6 o'clock positions. He also presented with treatment-resistant glaucoma with an intraocular pressure (IOP) of 37 mmHg, despite maximal topical IOP-lowering therapy. Since a second irradiation of the anterior segment was contraindicated, the eye was enucleated. Pathological analysis confirmed the diagnosis of iris melanoma and demonstrated iridocorneal angle invasion extending from the initial site to the recurrent tumor location. CONCLUSIONS AND IMPORTANCE: Regular ophthalmological surveillance for life with gonioscopy and high-frequency ultrasonography is recommended in patients with iris melanoma, due to the possibility of delayed local recurrence more than a decade after the initial treatment.

15.
Transl Vis Sci Technol ; 8(1): 9, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30652059

RESUMEN

The 2018 Ocular Oncogenesis and Oncology Conference was held through a partnership of the Association for Research in Vision and Ophthalmology (ARVO) and the Champalimaud Foundation. Twenty-one experts from international ocular oncology centers, from the Champalimaud Clinical Centre and the Champalimaud Foundation Cancer Research Program, and from patient advocacy organizations, delivered lectures on subjects that ranged from global ocular oncology, to basic research in mechanisms of ocular malignancy, to clinical research in ocular cancers, and to anticipated future developments in the area. The scientific program of the conference covered a broad range of ocular tumors-including uveal melanoma, retinoblastoma, ocular surface tumors, and adnexal and intraocular lymphomas-and pathogenesis and management were deliberated in the context of the broader systemic cancer discipline. In considering the latest basic and clinical research developments in ocular oncogenesis and oncology, and providing the opportunity for cross-talk between ocular cancer biologists, systemic cancer biologists, ocular oncologists, systemic oncologists, patients, and patient advocates, the forum generated new knowledge and novel insights for the field. This report summarizes the content of the invited talks at the 2018 ARVO-Champalimaud Foundation Ocular Oncogenesis and Oncology Conference.

16.
Retina ; 39(4): 692-699, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29252976

RESUMEN

PURPOSE: To evaluate treatment of circumscribed choroidal hemangioma by hyperfractionated proton beam therapy protocol (20 gray relative biological effectiveness in 8 fractions) on tumor control, attachment of retina and visual function. METHODS: Retrospective review of patients treated between January 2010 and April 2015 with at least 6 months of follow-up. RESULTS: Forty-three patients with exudative and symptomatic circumscribed choroidal hemangioma were included. Before treatment, 41 (95%) presented an exudative retinal detachment, median visual acuity was 20/63 and median tumor thickness was 3.3 mm. Mean follow-up was 26 months (7-62). At last follow-up, all patients presented regression of ultrasound tumor thickness and 23/43 (53.5%) a totally flat scar. The mean time to achieve a flat scar was 20 months. Retina was reattached in all patients except one with 9 months of follow-up. Visual acuity was improved or stabilized in 37 patients (86%) and final median visual acuity was 20/25. No patient presented radiation maculopathy or papillopathy. CONCLUSION: Proton beam therapy with a dose of 20 gray relative biological effectiveness delivered in 8 fractions provides excellent anatomical and functional results and are comparable with those obtained with the same dose delivered in 4 fractions. Longer follow-up is required to determine the long-term radiation sequelae.


Asunto(s)
Neoplasias de la Coroides/radioterapia , Hemangioma/radioterapia , Terapia de Protones , Adulto , Neoplasias de la Coroides/diagnóstico , Neoplasias de la Coroides/fisiopatología , Colorantes/administración & dosificación , Fraccionamiento de la Dosis de Radiación , Exudados y Transudados , Femenino , Angiografía con Fluoresceína , Estudios de Seguimiento , Hemangioma/diagnóstico , Hemangioma/fisiopatología , Humanos , Verde de Indocianina/administración & dosificación , Masculino , Persona de Mediana Edad , Dosificación Radioterapéutica , Efectividad Biológica Relativa , Estudios Retrospectivos , Resultado del Tratamiento , Agudeza Visual/fisiología
17.
Eur J Med Genet ; 62(3): 217-223, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30031154

RESUMEN

Retinoblastoma (Rb) results from biallelic inactivation of the RB1 gene. Hereditary Rb patients i. e germline carriers of a RB1 mutation also have a risk of developing subsequent malignant neoplasms (SMN) such as osteosarcomas. This SMN risk is maximized by external beam radiotherapy treatments (EBRT), which is why these treatments are now avoided. Nevertheless, EBRT is still a matter of great concern, as EBRT-treated patients are in their adulthood and SMNs remain the major cause of death for patients. To decipher the relationship between RB1 genotype and SMN development in EBRT treated patients, we conducted a retrospective study in a cohort of 160 irradiated hereditary Rbs with fully resolved RB1 mutational status. Median follow-up was 22 years [1-51] and median age of patients was 27 years old [7-53]. Among these 160 Rb patients, 120 did not develop any SMN (75%) and 40 developed SMNs (25%). The age at which EBRT is given (i.e. before or after the age of 12 months) was not correlated to SMN development (p = 0.6). We didn't find any difference in RB1 mutation type between patients with or without SMN, neither could we detect any linkage between mutation type and SMN location, SMN type and age at diagnosis. Interestingly, among 13 carriers of a RB1 low penetrance mutation, 3 of them developed sarcomas, a rare tumor that cannot be attributed to the general population. Our study cannot explain why a RB1 mutation leads or not to a SMN but demonstrated that EBRT patients with a low penetrance mutation remain at risk of SMN and should be cautiously monitored.


Asunto(s)
Mutación de Línea Germinal , Neoplasias Inducidas por Radiación/genética , Neoplasias Primarias Secundarias/genética , Proteínas de Unión a Retinoblastoma/genética , Retinoblastoma/genética , Sarcoma/genética , Ubiquitina-Proteína Ligasas/genética , Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Inducidas por Radiación/epidemiología , Neoplasias Primarias Secundarias/epidemiología , Penetrancia , Radioterapia/efectos adversos , Retinoblastoma/patología , Retinoblastoma/radioterapia , Sarcoma/epidemiología
18.
J Med Internet Res ; 20(11): e10258, 2018 11 27.
Artículo en Inglés | MEDLINE | ID: mdl-30465709

RESUMEN

BACKGROUND: Although HIV self-testing strategies have been recommended by the World Health Organization, HIV self-tests are not yet approved in Canada. Currently approved HIV self-tests offer toll-free lines that are insufficient for initiating expedited linkages to counseling and care, accurate interpretation, and support during HIV self-testing. We developed an innovative, multilingual software app called HIVSmart! to plug these gaps. OBJECTIVE: This study aimed to test our app-optimized oral HIV self-testing strategy for feasibility in men who have sex with men (MSM) who presented to test at a large sexual health clinic (Clinique Médicale L'Actuel) in Montreal. METHODS: Between July 2016 and February 2017, we offered a strategy consisting of the OraQuick In-Home HIV Test (an investigational device) and a tablet installed with the HIVSmart! app to study participants, who presented at a private office in the clinic, mimicking an unsupervised home environment. We evaluated the strategy for its feasibility, acceptability, and preference. Using the HIVSmart! app, participants were guided through the self-testing process. We determined feasibility with a metric defined as the completion rate, which consisted of the following 3 steps: (1) self-test conduct; (2) self-test interpretation; and (3) linkages to care. Participants independently performed, interpreted, recorded their self-test and result, engaged in pre- and posttest counseling, and sought linkages to care. Laboratory tests (p24, Western Blot, and RNA), as per country algorithms, were expedited, and linkages based on the rapid test status were arranged. RESULTS: Mean age of the 451 participants enrolled was 34 (range, 18-73) years. Of all participants, 97.1% (438/451) completed and submitted the survey through the HIVSmart! app. In total, 84.7% (371/438) of the participants were well educated (beyond high school) and 52.5% (230/438) had been tested within the past 6 months. Of the 451, 11.5% (52/451) were on pre-exposure prophylaxis. Feasibility (completion rate), an average proportion of the 3 steps, was computed to be 96.6% (419/451). The acceptability of the strategy was high at 98.5% (451/458). A majority of the participants (448/451, 99.3%) were found to be self-tested and lab-confirmed negative and were counseled after self- and rapid tests. In total, 0.7% (3/451) of the participants who self-tested positive and were lab-confirmed positive were linked to a physician within the same day. Furthermore, 98.8% (417/422) of the participants found the app to be useful and 94.0% (424/451) were willing to recommend it to a friend or partner. CONCLUSIONS: The HIVSmart! app-optimized strategy was feasible, accepted, and preferred by an educated, urban MSM population of Montreal. With the app, participants were able to perform, interpret, store results, and get rapidly linked to care. The HIVSmart!-optimized, self-testing strategy could be adapted and contextualized to many at-risk populations within Canada and worldwide, thereby maximizing its public health impact.


Asunto(s)
Infecciones por VIH/prevención & control , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Canadá , Estudios Transversales , Humanos , Masculino , Tamizaje Masivo/métodos , Persona de Mediana Edad , Aplicaciones Móviles , Factores de Riesgo , Adulto Joven
19.
Ocul Oncol Pathol ; 4(2): 112-115, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-30320091

RESUMEN

A woman in her early fifties had regular follow-up for a medium-sized divided nevus of the eyelids which had undergone several surgical excisions during childhood for functional and esthetic reasons. Malignant transformation of the nevus occurred in the inferior eyelid, with the appearance of a new pigmented flat lesion. Histology showed in situ melanoma, and an NRAS activating mutation was found. A full-thickness excision of the inferior eyelid was performed, followed by reconstruction. Local recurrence of the melanoma occurred 1 year after surgery. Lifelong follow-up of divided nevi of the eyelids is recommended, even if very few cases of malignant transformation have been reported so far.

20.
J Glob Oncol ; 4: 1-8, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-30241234

RESUMEN

PURPOSE: In most low-income countries, the diagnosis of retinoblastoma is delayed, resulting in a severe prognosis. The objectives of this study were to describe the access to diagnosis and care of children diagnosed with retinoblastoma and the challenges in two sub-Saharan African countries: the Republic of Côte d'Ivoire and the Democratic Republic of the Congo. PATIENTS AND METHODS: A descriptive cross-sectional study was conducted. Data were collected from the medical records of patients admitted during the period of January 1, 2013 to December 31, 2014. Data were entered and analyzed using Epi Info7.1 software and SAS 9.3. RESULTS: One hundred sixteen cases of retinoblastoma were collected, including 60 boys and 56 girls. The median diagnosis age was 3 years for both countries. Ninety-eight patients (84%) had unilateral retinoblastoma. Most of the patients presented with advanced disease (76% had extraocular retinoblastoma). Median time between initial symptoms and diagnosis was 8.5 months (range, 0.4 to 116.7 months). Median time between diagnosis and treatment initiation was 31 days (range, 0 to 751 days). The median cost for the treatment of the disease was estimated at $1,954 per patient. CONCLUSION: Late diagnosis of retinoblastoma, with extraocular disease, occurs frequently in both African countries. It is associated with delay in initiating treatment, and the cost of the treatment remains unaffordable for most of the families. Support groups for parents of affected children and the support of the Franco-African Pediatric Oncology Group remain important in improving early diagnosis and providing treatment in sub-Saharan African countries.


Asunto(s)
Retinoblastoma/diagnóstico , Adolescente , África del Norte , Preescolar , Côte d'Ivoire , Estudios Transversales , República Democrática del Congo , Femenino , Humanos , Lactante , Masculino , Pronóstico , Retinoblastoma/patología
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