Basal cell carcinoma: Difference between revisions
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==Background== | ==Background== | ||
* | *80% of skin cancers are basal cell, 16% are squamous cell, and 4% are melanomas | ||
*5% to 10% of basal cell carcinomas are aggressive, invade and destroy skin and surrounding tissues, sometimes reaching bone | |||
*Rarely a metastatic process | *Rarely a metastatic process | ||
===Risk Factors=== | |||
*UV radiation | |||
*Chronic [[arsenic]] exposure | |||
*Ionizing radiation | |||
*Immunosuppression | |||
*Age and skin colour (light tone) | |||
*Also known of a certain genetic predisposition (higher in people from the northern hemisphere) | |||
==Clinical Features== | ==Clinical Features== | ||
[[File:Basal cell carcinoma2.jpg|thumb|Ulcerated basal-cell carcinoma affecting the skin of the nose in an elderly patient.]] | |||
[[File:basal cell carcinoma.JPG|thumbnail]] | |||
*Slow growing | *Slow growing | ||
*Usually head and neck | *Usually head and neck | ||
*About 20% appear on areas less exposed to the sun, such as chest, back, extremities and scalp. | |||
*Only where hair follicles exist | *Only where hair follicles exist | ||
*Pearly, rolled border | *Pearly nodule with telangiectatic vessels, rolled border and central ulceration | ||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Generalized rash DDX}} | |||
== | ==Evaluation== | ||
*Clinical examination by trained clinician (dermatology referral) | |||
*Skin biopsy | |||
==Management== | ==Management== | ||
*Not typically managed within ED | |||
==Disposition== | ==Disposition== | ||
*Discharge with derm follow up | |||
==See Also== | ==See Also== | ||
*[[Squamous cell carcinoma]] | |||
==External Links== | ==External Links== | ||
==References== | ==References== | ||
<references/> | <references/> | ||
[[Category:Dermatology]] | |||
[[Category:Heme/Onc]] | |||
Latest revision as of 10:51, 24 July 2021
Background
- 80% of skin cancers are basal cell, 16% are squamous cell, and 4% are melanomas
- 5% to 10% of basal cell carcinomas are aggressive, invade and destroy skin and surrounding tissues, sometimes reaching bone
- Rarely a metastatic process
Risk Factors
- UV radiation
- Chronic arsenic exposure
- Ionizing radiation
- Immunosuppression
- Age and skin colour (light tone)
- Also known of a certain genetic predisposition (higher in people from the northern hemisphere)
Clinical Features
- Slow growing
- Usually head and neck
- About 20% appear on areas less exposed to the sun, such as chest, back, extremities and scalp.
- Only where hair follicles exist
- Pearly nodule with telangiectatic vessels, rolled border and central ulceration
Differential Diagnosis
Other Rash
- Acute generalized exanthematous pustulosis
- Allergic reaction
- Aphthous stomatitis
- Atopic dermatitis
- Coxsackie
- Dermatitis herpetiformis
- Exfoliative erythroderma
- Impetigo
- Pellagra
- Pityriasis rosea
- Serum Sickness
- Tinea capitus
- Tinea corporis
- Vitiligo
Evaluation
- Clinical examination by trained clinician (dermatology referral)
- Skin biopsy
Management
- Not typically managed within ED
Disposition
- Discharge with derm follow up