The Basal cell carcinoma (BCC, „basal cell carcinoma“) is the most common skin cancer. It usually grows slowly and metastasizes much less frequently than other forms of skin cancer, but can locally destructive especially on the face (nose, eye area, ears).

What is basal cell carcinoma?

Basal cell carcinoma develops from cells in the basal layer of the skin. It occurs preferentially on sun-exposed areas and is increasing in frequency worldwide.

Causes & risk factors

The most important risk factor is UV radiation (sun/solariums), especially over many years or through repeated sunburns. Other factors can be:

• Very light skin type, tendency to sunburn
• older age (cumulative UV dose)
• Immunosuppression (e.g. after transplantation)
• rare: genetic syndromes (e.g. Gorlin-Goltz)

Symptoms & typical signs

Basal cell carcinomas can look very different. Frequently:

• pearlescent Nodes, partly with fine vessels
• non-healing small wound/crust
• reddish spot that scales or recurs
• Scar-like, retracted change (sclerosing type)

Important: Any skin change that longer than 4 weeks does not heal or grow, should be clarified dermatologically.

Diagnosis

• Dermatoscopy (reflected light microscopy) in the dermatologist's practice
• Biopsy/histology for secure confirmation
• In special cases, imaging (e.g. high-frequency ultrasound) can help to better assess the extent.

Therapy (conventional medical overview)

Treatment depends on localization, size, subtype and risk profile.

1) Operative procedures

• Excision (Cut out with safety margin)
• Mohs surgery (microscopically controlled surgery) especially in high-risk localizations (face), recurrences or unfavorable subtypes

2) Non-surgical local options (depending on the case)

• Curettage/electrodesiccation, cryotherapy
• Topical therapies (e.g. for superficial BCCs, medically controlled)
• Photodynamic therapy (PDT)

3) Radiotherapy

• Option if surgery is not suitable or would be functionally/cosmetically unfavorable

4) Systemic therapy (advanced/rare)

• for locally advanced or metastatic BCC: targeted and immuno-oncological strategies are described in guidelines (depending on the situation and availability)

Aftercare & prevention

• more consistent UV protection (shade, clothing, broadband sun protection)
• Regular skin checks, as the risk of further basal cell carcinomas is increased

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Frequency lists (EDTFL & CAFL) - if available

Note on classification: These frequency data are taken from international frequency lists (CAFL/EDTFL environment) and are not Part of conventional medical guidelines.

CAFL (Consolidated Annotated Frequency List) - Entry

Cancer_carcinoma_basal_cell_skin: 2116, 760, 2128, 2280, 2876 (Hz)
Additional set: Cancer_carcinoma_basal_cell_skin_1: 11546700, 11546730, 11546750, 11546760, 11546870, 11546900 (Hz)

EDTFL/ETDFL - Entry (available online)

A set is published online for „Carcinoma Basal Cell“ (titled „KHZ“, values are given numerically as follows):
80, 120, 850, 5160, 20000, 40000, 85000, 97500, 355720, 454500, 515000

Practical note: In ETDFL/EDTFL contexts, depending on the source, frequencies are sometimes referred to as Hz or kHz notation led. If you tell me, with Which device/software you are working (and which unit it expects), I can give you the list of cleanly into the appropriate unit transferred.

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Author: NLS Informationsmedizin GmbH, Herbert Eder

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Disclaimer

Frequency therapy is not recognized by conventional medicine and their effectiveness against cancer is scientifically not secured. The frequency lists (CAFL/EDTFL) mentioned here are for information purposes only and replace none medical diagnosis or treatment. Please clarify any suspected cancer diagnosis and any treatment decision with specialists (dermatology/oncology).