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Arch Plast Surg > Volume 46(1); 2019 > Article
Kim, Kang, Lee, and Chung: Squamous cell carcinoma identified in a thick-walled epidermal cyst with a recurrent ulcer
Epidermal cysts are common skin tumors. In order to achieve cost-effectiveness, routine biopsy is not recommended in the setting of plastic surgery [1]. We report a case of squamous cell carcinoma (SCC) confirmed in a residual wound after resection of a cutaneous cyst. A 46-year-old male patient underwent local resection of a cystic lesion in the left nasal alar region 3 weeks before at a local medical center without biopsy. He developed tenderness, fever, and erythema over the wound, and visited our hospital (Fig. 1A). While the planned excision was performed, a 0.8×0.9-cm-thick white capsule was observed (Fig. 2). Therefore, a biopsy including skin tissue was performed. A SCC was then diagnosed (Fig. 3), and additional resection with a 5-mm safety margin was performed. During the 18-month follow-up period, no recurrence was observed (Fig. 1B). Owing to the rarity of SCC arising from epidermal cysts, the nature and mechanism of this phenomenon remains uncertain. Malignant change of an epidermal cyst is suspected when a chronic wound shows a sudden increase in size and ulceration. In such cases, other authors have suggested that biopsy and complete excision with a pathological examination should be performed [2]. According to a recent study, reported cases of SCC from epidermal cysts have increased [3]. Thus, to exclude malignant tumors, a biopsy is recommended when epidermal cysts with recurrent ulcers show wall thickening.

CONFLICTS OF INTEREST

No potential conflict of interest relevant to this article was reported.

Notes

Ethical approval

The study was approved by the Institutional Review Board of Yeungnam University Hospital (IRB No. YUMC 2018-09-026) and performed in accordance with the principles of the Declaration of Helsinki. Written informed consent was obtained.

Notes

Patient consent

The patient provided written informed consent for the publication and the use of his images.

Fig. 1.
(A) The patient at his first visit to our hospital. He had developed tenderness, febrile sensation, and erythema on the wound in the left nasal alar region. (B) Six-month postoperative follow-up. The patient shows a well-healed state in the nasal alar region without recurrence.
aps-2018-01046f1.jpg
Fig. 2.
A biopsy specimen. A 0.8×0.9-cm-thick white capsule was observed.
aps-2018-01046f2.jpg
Fig. 3.
Cells showing mild to moderate atypia with abundant pink cytoplasm and carcinoma with well-developed keratinization, showing infiltration downward. These are typical findings of squamous cell carcinoma (hematoxylin and eosin stain, ×40).
aps-2018-01046f3.jpg

References

1. Fisher M, Alba B, Bhuiya T, et al. Routine pathologic evaluation of plastic surgery specimens: are we wasting time and money? Plast Reconstr Surg 2018;141:812–6.
crossref pmid
2. Lee JW, Shin JY, Roh SG, et al. Squamous cell carcinoma arising from an epidermal inclusion cyst. Arch Plast Surg 2016;43:112–4.
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3. Frank E, Macias D, Hondorp B, et al. Incidental squamous cell carcinoma in an epidermal inclusion cyst: a case report and review of the literature. Case Rep Dermatol 2018;10:61–8.
crossref pmid pmc
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Squamous Cell Carcinoma Arising from an Epidermal Inclusion Cyst2016 January;43(1)



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