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Related Concept Videos

The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...

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Related Experiment Video

Updated: Jun 19, 2026

Retinal Pigment Epithelium Transplantation in a Non-human Primate Model for Degenerative Retinal Diseases
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Retinal Pigment Epithelium Transplantation in a Non-human Primate Model for Degenerative Retinal Diseases

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RETINAL PIGMENT EPITHELIAL TUMORS IN 948 EYES OF 926 PATIENTS.

Carol L Shields1, Taweevat Attaseth, YuBai Chou

  • 1Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania.

Retina (Philadelphia, Pa.)
|June 17, 2026
PubMed
Summary

Retinal pigment epithelial (RPE) tumors vary in type and presentation. While most RPE tumors are benign and stable, aggressive forms like combined hamartoma, adenoma, and adenocarcinoma can impact vision.

Keywords:
RPEadenocarcinomaadenomacombined hamartoma of retina and RPEcongenital hypertrophy of RPEretinal pigment epitheliumtumor

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Retinal Pigment Epithelium Transplantation in a Non-human Primate Model for Degenerative Retinal Diseases
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Subretinal Implantation of RPE on a Carrier in Minipigs: Guidelines for Preoperative Preparations, Surgical Techniques, and Postoperative Care
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Subretinal Implantation of RPE on a Carrier in Minipigs: Guidelines for Preoperative Preparations, Surgical Techniques, and Postoperative Care

Published on: November 11, 2022

Area of Science:

  • Ophthalmology
  • Oncology

Background:

  • Retinal pigment epithelial (RPE) tumors are a diverse group of neoplasms.
  • Understanding their frequency, characteristics, and outcomes is crucial for patient management.

Purpose of the Study:

  • To define the frequency and types of retinal pigment epithelial (RPE) tumors.
  • To analyze the demographic, clinical, and imaging features of RPE tumors.
  • To evaluate the outcomes and visual acuity impact of different RPE tumor types.

Main Methods:

  • Retrospective review of computer-coded RPE tumors over five decades.
  • Analysis of 926 consecutive patients diagnosed with RPE tumors.
  • Statistical comparison of RPE tumor characteristics and outcomes based on patient demographics, tumor features, and imaging modalities.

Main Results:

  • Congenital hypertrophy of the RPE was the most common type (79%).
  • Significant differences observed in patient age, race, sex, visual acuity, tumor size, and location across RPE tumor types.
  • Combined hamartoma, adenoma, and adenocarcinoma showed higher rates of visual acuity loss and nodular growth over 10 years.

Conclusions:

  • RPE tumors present a wide spectrum of clinical features and prognoses.
  • Most RPE tumors are stable with minimal visual impact.
  • Combined hamartoma of the retina and RPE, adenoma, and adenocarcinoma require closer monitoring due to potential vision loss.