A carcinoma with features of porocarcinoma, dermal ductular carcinoma, and squamous cell carcinoma in situ

• Published in: The American journal of dermatopathology Vol. 29; no. 1; pp. 75 - 78
• Main Authors: ONODERA, Hanae, MIHM, Martin C, SATO, Toshiki, MATSUTA, Mayumi, AKASAKA, Toshihide, NAKAMURA, Shin-Ichi
• Format: Journal Article
• Language: English
• Published: Hagerstown, MD Lippincott Williams & Wilkins 01-02-2007
• Subjects: Aged; Back; Biological and medical sciences; Carcinoma in Situ - diagnosis; Carcinoma in Situ - pathology; Carcinoma, Ductal - diagnosis; Carcinoma, Ductal - pathology; Carcinoma, Squamous Cell - diagnosis; Carcinoma, Squamous Cell - pathology; Dermatology; Diagnosis, Differential; Female; Humans; Medical sciences; Neoplasms, Adnexal and Skin Appendage - diagnosis; Neoplasms, Adnexal and Skin Appendage - pathology; Skin - pathology; Skin involvement in other diseases. Miscellaneous. General aspects; Sweat Gland Neoplasms - diagnosis; Sweat Gland Neoplasms - pathology; Tumors of the skin and soft tissue. Premalignant lesions; Skin disease; Squamous cell carcinoma; dermal ductular carcinoma; eccrine carcinoma; Carcinoma in situ; Dermatology; adnexal carcinoma; squamoid differentiation; Malignant tumor; Eccrine gland; porocarcinoma; Anatomic pathology; squamous cell carcinoma in situ; Eccrine porocarcinoma; Derm; Differentiation; Sweat gland disease
• ISSN: 0193-1091; 1533-0311
• DOI: 10.1097/01.dad.0000246389.98258.21

We report the case of a 69-year-old Japanese woman with an extraordinary carcinoma on her back. The tumor had three different histologic components including porocarcinoma, dermal ductular carcinoma, and an area resembling squamous cell carcinoma in situ (SCCIS). Sweat gland tumors (SGTs) are known to have a wide spectrum of pathologic appearances and variable grades of differentiation. This report expands the spectrum of reported combinations.