Primary cutaneous adenoid cystic carcinoma of the right forearm: a case report and dermoscopic features
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By
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Si Li
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Xue Cheng
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Ronggui Xing
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Zhenyin Peng
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Tianyou Xiong
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Yanan Jiang
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Xianbiao Zou
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June 16, 2026
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Clinical Scorecard: A Case Study of Primary Cutaneous Adenoid Cystic Carcinoma on the Right Forearm: Dermoscopic and Pathological Insights
At a Glance
| Category | Detail |
|---|
| Condition | |
| Key Mechanisms | Slow-growing malignant adnexal tumor with neurotropism and high local recurrence rate, necessitating careful management. |
| Target Population | |
| Care Setting | |
Key Highlights
- PCACC presents as a slow-growing, painless, fixed subcutaneous nodule or plaque.
- Histopathological examination is essential for diagnosis, confirming tumor type and extent.
- Wide local excision is the standard treatment to minimize local recurrence.
- Dermoscopy can provide diagnostic clues but is not definitive.
- Long-term follow-up is necessary due to potential delayed recurrence.
Guideline-Based Recommendations
Diagnosis
- Histopathological examination is required to confirm diagnosis.
- Dermoscopy may assist in differential diagnosis.
- Immunohistochemical markers such as CK, CEA, EMA, and CD117 should be evaluated.
Management
- Wide local excision is the recommended therapeutic approach.
Monitoring & Follow-up
- Long-term follow-up is imperative to monitor for recurrence and assess treatment success.
Risks
- High rate of local recurrence and potential for perineural invasion.
Patient & Prescribing Data
Successful management involves wide local excision with careful monitoring for recurrence.
Clinical Best Practices
- Consider PCACC in differential diagnosis of slow-growing cutaneous nodules.
- Perform thorough histopathological evaluation for definitive diagnosis.
- Ensure negative margins during surgical excision.
- Utilize imaging to rule out metastatic disease prior to treatment.
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