Journal of Pathology and Translational Medicine

Fibroadenoma with Formation of Epidermal Cyst: A case report.: Jong Jae Jung, Ji Shin Lee, Seung Hyun; Korean J Pathol. 2000;34(7):537-539.

Abstract PDF: Epidermal cyst in the fibroadenoma of the breast is very rare. A 29-year-old woman presented with a lump in the upper outer quadrant of the right breast. Clinically it was a fibroadenoma and the excisional specimen showed an encapsulated, firm lobulated lesion with a cystic area on cut surface. The cystic area showed squamous metaplasia of the ductal epithelium and keratinous cyst formation in the fibroadenoma. We report this unusual case with review of literatures.

Epidermal Cyst in the Renal Pelvis: A Case Report with Review of the Literature.: Sun Zoo Kim, Tae In Park, Sang Han Lee, Jung Sik Kwak; Korean J Pathol. 2004;38(4):270-272.

Abstract PDF: We report here on a case of an epidermal cyst arising in the kidney. This cyst occurred in a 61-year-old woman with a past history of several attacks of ureteral stones and she received treatments of extracoporeal shock wave lithotripsy and open nephrolithostomy. On the intravenous pyelogram, a relatively well demarcated, 5x5 cm-sized lesion with calcification was detected in the renal pelvis and calices. The lesion was removed by percutaneous nephrolithotomy. Histologically, the lesion had the same morphologic feature as a typical epidermal cyst arising in the skin. It has been postulated that the intrarenal epidermal cyst arises either from epidermal remnants or it results from traumatic implantation of transformed epithelium. Considering the past history of the patient, it might well be suspected that the present case occurred as a result of traumatic implantation of metaplastic squamous epithelial cells. We report here on a very interesting case of an epidermal cyst in the renal pelvis with a review of the relevant literatures.

Squamous Cell Carcinoma Originating from an Epidermal Cyst.: Jung Weon Shim, Seoung Wan Chae, Hye Rim Park, Young Euy Park; Korean J Pathol. 1994;28(5):536-537.

Abstract PDF: The occurrence of sqamous cell carcinoma arising from epidermal cyst is unusual. A 54-year-old man with soft tissue mass on the back for 25 years presented an infiltrating squamous cell carcinoma within the wall of epidermal cyst. All tissue excised deserved to be examined to be axamined carefully in longterm epidermal cyst.

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