Dr. Yan Peng completed her Pediatric Residency/Chief Resident at Beijing Medical University Hospitals and practiced there as a Pediatric Nephrologist till 1993. After a combined six years of basic research on kidney disease at Mayo Clinic, Rochester, MN and UT-Southwestern Medical Center (UTSW), Dallas, TX, she went to University of Pittsburgh Medical Center (UPMC) for her Pathology Residency in 1999. Upon the completion, she took two one-year ACGME accredited fellowship trainings in Breast and Gynecologic Pathology at UPMC and Cytopathology at Beth Israel Deaconess Medical Center and Harvard Medical School in Boston, respectively. In 2005, she joined the Pathology Faculty at UTSW, where she has been practicing Surgical Pathology and Cytopathology till now. She is certified in Anatomic Pathology, Clinical Pathology, and Cytopathology by the American Board of Pathology.

Currently she is a dedicated Breast and Gynecologic Pathologist and a member of Cancer Committee at UTSW Simmons Cancer Center. She has participated in multiple National Cancer Institute (NCI) Breast and Gynecologic cancer clinical trials. She is Medical Directors of Diagnostic Immunohistochemistry Laboratory and Tumor Biomarker Image and In Situ Hybridization Analysis Laboratory at UTSW Physician Pathologist Leadership Team for Parkland Health & Hospital System. She was elected to UTSW Faculty Senate in 2011.

She has published more than 60 peer-reviewed articles and book chapters. Four of the articles on triple-negative breast cancer were selected to be CME/SAM articles by the editorial board of American Journal of Clinical Pathology. She is an active Topic Team Member of Education Best Practices Team of American Society for Clinical Pathology (ASCP) and a reviewer of course proposals and abstracts for ASCP annual meeting.

Her specialties include Breast and Gynecologic Cancer Pathology, Cytopathology, Diagnostic Immunohistochemistry with a particular interest in unknown primary cancer work-up, and interpretation of prognostic and predictive tumor biomarkers tested by image analysis and fluorescence in-situ Hybridization (FISH).


Medical School
Beijing Medical University (1986)
Beijing University Hospital (1989), Pediatrics
Graduate School
Beijing Medical University (1991)
Mayo Clinic (1995), Physiology
UT Southwestern Medical Center (HR) (1999), Molecular Nephrology Research
University of Pittsburgh Medical Center (2003), Anatomic & Clinical Pathology
University of Pittsburgh Medical Center Magee Womens Hospital (2004), Breast & Gynecologic Pathology
Harvard Medical School/Beth Israel Deaconess Medical Center (2005), Cytopathology

Clinical Interest

Breast Pathology

  • Comprehensive Immunohistochemical Markers including Prognostic Markers
  • Evaluation of Breast Tissue for Diagnosis & Treatment Plans

Gynecologic Pathology

  • Biopsy & Cytology Correlation
  • Cervical/Endocervical Biopsies & Endometrial Curetting
  • HPV Hybridization for Cervical & Vulvar Biopsies
  • Identification & Quantitation of Infectious Organisms
  • Prognostic Markers for Endometrial Carcinomas

Research Interest

  • Breast and Gynecologic Cancer Pathology
  • Diagnostic, prognostic and predictive tumor biomarkers


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Honors & Awards

  • Arthur Weinberg UTSW Pathology Resident Research Article Award (Faculty mentor/Senior author)
    UT Southwestern Medical Center (2011)
  • Three articles on breast cancer were selected to be CME/SAM articles by the Editorial Board of the American Journal of Clinical Pathology
  • Distinguished Young Investigator Award in Medicine
    Beijing, China (1993)
  • Distinguished Scientist Award of Canada China Child Health Foundation
  • Best National Medical Article Award
    China (1991)
  • Outstanding Medical Student Award and Scholarship
    Beijing Medical University (1986)