Related Experiment Video
Updated: Dec 10, 2025

06:53
Cell Population Analyses During Skin Carcinogenesis
Published on: August 21, 2013
12.8K
[PIGMENTED BASAL CELL CARCINOMA AND IONIZING RADIATION]
Mati Rozenblat1, Ofer Mor1, Amro Bladsee1
1Department of Dermatology, "Emek" Medical Center, Afula, Israel.
Harefuah
|August 28, 2020
Summary
Ionizing radiation exposure may alter the characteristics of pigmented basal cell carcinoma (BCC). Patients treated with radiation showed a higher rate of well-differentiated tumors compared to controls.
Area of Science:
- Dermatology
- Oncology
- Radiation Oncology
Background:
- Chronic exposure to ionizing radiation is linked to increased morbidity.
- Basal cell carcinoma (BCC) has known associations with ionizing radiation.
- Specific characteristics of pigmented BCC in relation to prior radiation exposure are not well-documented.
Purpose of the Study:
- To investigate differences in histological and clinical manifestations of pigmented BCC.
- To compare pigmented BCC in patients previously treated with ionizing radiation for ringworm versus those without such treatment.
Main Methods:
- Retrospective analysis of 23 patients with pigmented BCC treated with ionizing radiation for ringworm.
- Comparison with a control group of 21 patients with pigmented BCC not treated with ionizing radiation.
- Data collected between 2005-2015 and analyzed using SPSS.
Main Results:
- A significantly higher percentage of well-differentiated tumors (34.8%) was observed in the ionizing radiation-treated group compared to the control group (14.3%).
- The average age of patients in the ionizing radiation-treated group was 66, versus 73 in the control group.
Conclusions:
- Pigmented basal cell carcinoma exhibits distinct characteristics in patients with a history of ionizing radiation treatment.
- These findings suggest a potential influence of prior radiation exposure on the presentation of pigmented BCC.
- Further research is warranted to validate and expand upon these observations.
More Related Videos
Related Concept Videos
Skin Cancer
5.6K
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
5.6K
Mutations
42.4K
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
42.4K
Pigmentation
4.0K
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
4.0K
The Retinoblastoma Gene
4.5K
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,...
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,...
4.5K
Nucleotide Excision Repair
4.7K
DNA Distortion and Damage
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
4.7K
Biological Effects of Radiation
17.2K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
17.2K
![Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate DMBA-TPA](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60445.jpg&w=3840&q=50)
