Squamous cell carcinoma of the skin
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2], Raviteja Guddeti, M.B.B.S. [3]
Overview
Historical Aspects
Pathophysiology
Epidemiology and Demographics
Risk Factors
Screening
Causes of Squamous cell carcinoma
Differential Diagnosis
Natural History Complications and Prognosis
History & Symptoms
Physical Examination
Ear Nose and Throat
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Squamous cell carcinoma in oral cavity.
Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology -
Squamous cell carcinoma in oral cavity.
Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology -
Squamous cell carcinoma in oral cavity.
Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology
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Squamous Cell Cancer of the Mouth: Irregular, necrotic appearing tissue on the inside of the mouth due to extensive squamous cell cancer. Patient has limited ability to open his mouth (aka trismus) as a result of the infiltrating cancer.
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Squamous Cell Cancer, Base of Tongue: Note white area with swelling, right base of tongue.
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Squamous Cell Cancer of the Mouth: Cancer that began along the lower gum line has spread to left submandibular lymph nodes.
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Squamous Cell Cancer of the Mouth: Cancer that began along the lower gum line has spread to left submandibular lymph nodes.
Esophagus
Esophageal cancer may be due to either squamous cell carcinoma (ESCC) or adenocarcinoma (EAC). SCCs tend to occur closer to the mouth, while adenocarcinomas occur closer to the stomach. Dysphagia (difficulty swallowing, solids worse than liquids) and odynophagia are common initial symptoms. If the disease is localized, esophagectomy may offer the possibility of a cure. If the disease has spread, chemotherapy and radiotherapy are commonly used.
Penis
When squamous cell carcinoma in situ (Bowen's disease) is found on the penis, it is called erythroplasia of Queyrat[6]. This type of cancer respond very well to an experimental agent called Aldara.
Prostate
When associated with the prostate, squamous cell carcinoma is very aggressive in nature. It is difficult to detect as there is no increase in prostate specific antigen levels seen; meaning that the cancer is often diagnosed at an advanced stage.
Lung
When associated with the lung, it often causes ectopic production of parathyroid hormone-related protein (PTHrP), resulting in hypercalcemia.
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Biopsy of a highly differentiated squamous cell carcinoma of the mouth. Haematoxylin & eosin stain.
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Photograph of a squamous cell carcinoma. Tumour is on the left, obstructing the bronchus (lung). Beyond the tumour the bronchus is inflammed and contains mucus
Vagina and cervix
Vaginal squamous cell carcinoma spreads slowly and usually stays near the vagina, but may spread to the lungs and liver. This is the most common type of vaginal cancer.
Cervix: Squamous cell carcinoma
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Staging
Treatment
Future and Investigational treatment strategies
In 2007, Australian biopharmaceutical company Clinuvel Pharmaceuticals Limited began clinical trials with a melanocyte-stimulating hormone called melanotan (known by the International Nonproprietary Name afamelanotide, formerly CUV1647)[7] to provide photoprotection for organ transplant patients against squamous cell carcinoma of the skin and actinic keratosis.[8][9]
Cetuximab a monoclonal antibody that targets the epidermal growth factor receptor (EGFR), has antitumor activity in patients with advanced squamous cell carcinoma of the skin, as initially suggested by case reports.
References
- ↑ http://picasaweb.google.com/mcmumbi/USMLEIIImages
- ↑ http://picasaweb.google.com/mcmumbi/USMLEIIImages
- ↑ http://www.ghorayeb.com
- ↑ http://www.ghorayeb.com
- ↑ http://www.ghorayeb.com
- ↑ http://www.emedicine.com/derm/TOPIC144.HTM
- ↑ "World Health Organisation assigns CUV1647 generic name" (PDF). Clinuvel. 2008. Retrieved 2008-06-17.
- ↑ Clinuvel » Investors » FAQs
- ↑ PharmaAsia - Clinuvel’s Drug Begins Global Phase II Skin Cancer Trials
External links
- Information on Squamous Cell Carcinoma from The Skin Cancer Foundation
- Article by Stephen D Hess, MD, PhD
- DermNet NZ: Squamous cell carcinoma
- Squamous cell carcinoma in transplant recipients
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