33 Special Types of Invasive Breast Carcinoma: Diagnostic Criteria ...

CASE 2 - Diagnosis:
Intracystic Papillary Carcinoma
with Adjacent Low Low-grade grade DCIS DCIS.
(Encapsulated Papillary Carcinoma)
Intracystic Papillary Carcinoma
• IPC “uncommon” breast tumor.
• Elderly patients (median ~70 yrs, range 27
to 99);
• Discrete, circumscribed solitary masses
(usually central & subareolar)
• At least 1 cm diameter (Carter defined).
• ~3.5% of IPC cases occur in men.
Carter et al. Cancer 1977 & 1983
• Carter et al. among first to report this tumor.
• 41 cases, mean age 63 yrs (range 42-87).
• Mean size 3.5 cm (range 1-14 cm).
• Cystic & encapsulated; none infiltrating.
• Adenocarcinoma projected into cystic cavity.
• Bound by fibrosis, often recent or old hemorrhage,
chronic inflammation.
• Wall may or may not have epithelium.
10/8/2011
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