PMID- 25374127 OWN - NLM STAT- MEDLINE DCOM- 20170327 LR - 20181202 IS - 1860-1499 (Electronic) IS - 1860-1499 (Linking) VI - 49 IP - 3 DP - 2016 Sep TI - Cystic apocrine ductal carcinoma in situ with increased EGFR expression, trisomy 7, and associated focal invasion. PG - 170-6 LID - 10.1007/s00795-014-0091-y [doi] AB - A 71-year-old woman was admitted to our hospital with a lump in her right breast. Mammography revealed an internal high-density mass in the lower right breast, which was larger than it was 2 years ago. Considering the findings from ultrasonography, computed tomography, and cytology, an intracystic carcinoma could not be ruled out. The patient underwent excisional biopsy, which revealed an apocrine ductal carcinoma in situ (ADCIS) with focal invasive apocrine carcinoma (IAC). The diagnosis was based on morphology and immunohistochemistry (IHC), which was negative for the estrogen and progesterone receptors, and positive for the androgen receptor. Expression of the human epidermal growth factor receptor 2 and the epidermal growth factor receptor (EGFR) received an immunohistochemical score of 2+. Trisomy of chromosome 7, including multiple CEP 7 and EGFR signals, was observed in ADCIS by fluorescence in situ hybridization (FISH). IAC exhibited similar results for IHC and FISH. This is the first reported case showing trisomy 7 resulting in EGFR copy number gain and increased EGFR expression in ADCIS. FAU - Tajima, Shogo AU - Tajima S AD - Department of Pathology, Shizuoka Saiseikai General Hospital, 1-1-1 Oshika, Suruga-ku, Shizuoka, 422-8021, Japan. stajima-tky@umin.ac.jp. FAU - Waki, Michihiko AU - Waki M AD - Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, Shizuoka, Japan. FAU - Nasu, Hatsuko AU - Nasu H AD - Department of Radiology, Hamamatsu University School of Medicine, Shizuoka, Japan. FAU - Ide, Yoshimi AU - Ide Y AD - Department of Surgery I, Hamamatsu University School of Medicine, Shizuoka, Japan. LA - eng PT - Case Reports PT - Journal Article DEP - 20141106 PL - Japan TA - Med Mol Morphol JT - Medical molecular morphology JID - 101239023 RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Aged MH - Apocrine Glands/*pathology MH - Breast Neoplasms/diagnostic imaging/*genetics/*pathology MH - Carcinoma, Ductal, Breast/diagnostic imaging/*genetics/*pathology MH - ErbB Receptors/*metabolism MH - Female MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Mammography MH - Neoplasm Invasiveness MH - *Trisomy OTO - NOTNLM OT - Apocrine ductal carcinoma in situ OT - Chromosome 7 OT - Epidermal growth factor receptor OT - Invasive apocrine carcinoma OT - Trisomy EDAT- 2014/11/07 06:00 MHDA- 2017/03/28 06:00 CRDT- 2014/11/07 06:00 PHST- 2014/09/22 00:00 [received] PHST- 2014/10/23 00:00 [accepted] PHST- 2014/11/07 06:00 [entrez] PHST- 2014/11/07 06:00 [pubmed] PHST- 2017/03/28 06:00 [medline] AID - 10.1007/s00795-014-0091-y [pii] AID - 10.1007/s00795-014-0091-y [doi] PST - ppublish SO - Med Mol Morphol. 2016 Sep;49(3):170-6. doi: 10.1007/s00795-014-0091-y. Epub 2014 Nov 6.