Derm Cases · General Medicine
OSCE — Melanoma & Skin Cancer
Eight-minute OSCE station on Melanoma & Skin Cancer: focused history, examination priorities, investigations, emergency and definitive management.
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Study tools
Target exams
Brief (to candidate)
You will assess a patient with a presentation consistent with Melanoma & Skin Cancer.
You have 8 minutes to take a focused history, outline examination, investigations, and management including red flags.
Clinical context
Skin cancer is the commonest malignancy worldwide and splits into melanoma (aggressive melanocytic cancer with high metastatic potential) and the non-melanoma skin cancers (NMSC) — basal cell carcinoma (BCC, commonest and locally invasive, rarely metastasises) and squamous cell carcinoma (SCC, keratinising, can metastasise to nodes) — plus the rarer, aggressive Merkel cell carcinoma (neuroendocrine, polyomavirus-related). Risk factors centre on ultraviolet radiation (sun exposure, sunburn, tanning beds), fair skin, freckles, red hair (MC1R), immunosuppression, older age, family/genetic predisposition (FAMM/CDKN2A, xeroderma pigmentosum, Gorlin), and previous skin cancer. Melanoma is recognis
[1]Candidate tasks
- Clarify onset, severity, associated features, and red-flag symptoms.
- State focused examination priorities.
- List first-line investigations and any named score/criteria.
- Give immediate resuscitation steps.
- Outline definitive management with doses/routes where standard.
- Name complications and disposition (ward / HDU / theatre / discharge safety-net).
- Mention one special-population modifier (pregnancy, child, elderly, CKD).
Examiner checklist
| Domain | Pass behaviours |
|---|---|
| Definition | Correct working diagnosis language |
| Assessment | Focused, prioritised, red flags sought |
| Investigations | Appropriate first-line + interpretation |
| Emergency care | ABC / time-critical actions first |
| Definitive care | Specific drugs/procedures, not generic phrases |
| Safety | New or changing mole with ABCDE features (Asymmetry, Border, Colour, Diameter, Evolution) — excise for histology |
| Safety | Pearly nodule with rolled border, arborising telangiectasia and central ulceration — basal cell carcinoma |
| Safety | Rapidly growing, tender, ulcerating scaly keratinising nodule on sun-exposed skin — squamous cell carcinoma: excise |
| Communication | Clear plan and safety-netting |
Model outline
Lead with the working diagnosis and life threats. Resuscitate before definitive tests when unstable. Use guideline-standard therapy with named agents and doses. Document escalation criteria and follow-up. A safe candidate is specific, structured, and never delays critical care for non-urgent imaging.[2]
References2ShowHide
- [1]Zaorsky NG, Lee CT, Zhang E, et al. Hypofractionated radiation therapy for basal and squamous cell skin cancer: A meta-analysis Radiother Oncol, 2017.PMID 28843727
- [2]Gershenwald JE, Scolyer RA, Hess KR, et al. Melanoma staging: Evidence-based changes in the American Joint Committee on Cancer eighth edition cancer staging manual CA Cancer J Clin, 2017.PMID 29028110