J Korean Soc Radiol.  2013 May;68(5):423-426.

Ductal Carcinoma In Situ Arising in a Benign Phyllodes Tumor: A Case Report

• Shin DJ
• Kim DB
• Roh JH
• Kwak BS

Abstract

A 42-year-old woman was presented with an ovoid mass detected on a mammography. Her physical examination revealed a 2 cm ill-defined mass in the right upper outer breast. A sonogram demonstrated a 1.9 cm ovoid, partially microlobulated and partially well-circumscribed, and an isoechoic mass with increased vascularity on Doppler imaging. Surgical excision was performed and the pathology revealed ductal carcinoma in situ (DCIS) in a phyllodes tumor. DCIS within a phyllodes tumor is a very rare event. Here, we report on a case of DCIS in a phyllodes tumor.

MeSH Terms

Breast
Breast Neoplasms
Carcinoma, Ductal
Carcinoma, Intraductal, Noninfiltrating
Female
Humans
Mammography
Phyllodes Tumor
Physical Examination

Figure

• 

  Fig. 1 A 42-year-old woman with DCIS in a phyllodes tumor. A. A mediolateral oblique mammogram shows a 2.2 × 1.4 cm sized, ovoid, circumscribed, and iso-dense mass in the upper portion of the right breast (arrow). B. A sonogram shows an ovoid, partially circumscribed, partially indistinct, and isoechoic mass in the right breast, 10 o'clock direction. Doppler US (not shown) showed vascularity in the mass. C. A well-defined tumor shows mildly cellular stroma (asterisk) and epithelial-lined cleft (arrowheads), exhibiting a leaf-like pattern. The stromal component revealed benign phyllodes tumor (Hematoxylin & Eosin staining, × 40). D. A 1.2 cm sized cribriform DCIS (arrows) is identified within the phyllodes tumor (Hematoxylin & Eosin staining, × 40). Note.-DCIS = ductal carcinoma in situ, US = ultrasound

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