Phoenix D. Bell, MD, MS

Assistant Professor of Pathology, Assistant Director of Immunohistochemistry, Division of Anatomic Pathology

Dr. Bell is an Assistant Professor of Pathology at the University of Pittsburgh School of Medicine and Assistant Director of Immunohistochemistry at UPMC.

Clinical Expertise

  • Gastrointestinal Pathology
Education & Training
MSc: ICAHN School of Medicine at Mt. Sinai
MD: St. George’s University School of Medicine
Residency: Anatomic Pathology, University of Rochester Medical Center
Fellowship: Gastrointestinal Pathology, Brigham & Women's Hospital, Harvard Medical School
UPMC Department of Pathology, Research Pilot Award, 2022
Gastrointestinal Pathology Society, Abstract Award Runner-Up, 2018
Research Interests
  • Appendix Pathology
  • Colorectal Pathology
Representative Publications
  • Bell P. and Reetesh K. Pai. 2022. Goblet cell adenocarcinoma of the appendix: an update and practical approach to diagnosis and grading. Hum Pathol. Jun 9:S0046-8177(22)00147-2. doi: 10.1016/j.humpath.2022.06.002. Epub ahead of print. PMID: 35691370.
  • Bell P. and Reetesh K. Pai. 2022. Immune response in colorectal carcinoma: a review of its significance as a predictive and prognostic biomarker. Histopathology. doi: 10.1111/his.14713. Epub ahead of print. PMID: 35758208.
  • Vayrynen J, Haruki K, Lau M, Vayrynen S, Ugai T, Akimoto N, Zhong R, Zhao M, Costa A, Borowsky J, Bell P, Takashima Y, Fujiyoshi K, Arima K, Kishikawa J, Shi S, Twombly T, Song M, Wu K, Chan A, Zhang X, Fuchs C, Meyerhardt J, Giannakis M, Ogino S, Nowak J. Spatial organization and prognostic significance of NK and NKT-like cells via multimarker analysis of the colorectal cancer microenvironment. 2022. Cancer Immunol Research. 10(2): 215-227. PMID: 34937729.
  • Rostami K, Ensari A, Marsh MN, Srivastava A, Villanacci V, Carroccio A, Asadzadeh Aghdaei H, Bai JC, Bassotti G, Becheanu G, Bell P, Di Bella C, Bozzola AM, Cadei M, Casella G, Catassi C, Ciacci C, Apostol Ciobanu DG, Cross SS, Danciu M, Das P, Del Sordo R, Drage M, Elli L, Fasano A, Florena AM, Fusco N, Going JJ, Guandalini S, Hagen CE, Hayman DTS, Ishaq S, Jericho H, Johncilla M, Johnson M, Kaukinen K, Levene A, Liptrot S, Lu L, Makharia GK, Mathews S, Mazzarella G, Maxim R, La Win Myint K, Mohaghegh-Shalmani H, Moradi A, Mulder CJJ, Ray R, Ricci C, Rostami-Nejad M, Sapone A, Sanders DS, Taavela J, Volta U, Walker M, Derakhshan M. 2022. Gluten Induces Subtle Histological Changes in Duodenal Mucosa of Patients with Non-Coeliac Gluten Sensitivity: A Multicentre Study. Nutrients. 14(12):2487. PMID: 35745217.
  • Bell P, Gurung P, Teramoto Y, Numbere Numbereye, Yang Zhiming, Miyamoto H. 2022. The Clinical Significance of Perineural Invasion on Prostate Needle Core Biopsy. Arch Pathol Lab Med. PMID: 35020791.
  • Bell P, Teramoto Y, Gurung P, Yang Z, Miyamoto H. 2022. Limited adenocarcinoma of the prostate on needle core biopsy: is accurate grading critical? Arch Pathol Lab Med. 146(4):469-477. 35020802.
  • Li M, Sack JS, Bell P, Rahma OE, Srivastava A, Grover S, Zucker SD. 2021. Utility of liver biopsy in diagnosis and management of high-grade immune checkpoint inhibitor hepatitis in patients with cancer. JAMA Oncology. 7(11): 1711-1714. PMID: 34554206.
  • Bell P, Anderson J, and Srivastava A. 2021. The Frontiers of Serrated Polyps. Am J Surg Pathol. PMID: 34545859.
  • Ajabnoor R, Bell P, Schiffman S, Carmody E, Monu J, Wang X. 2021. Histiocytic sarcoma arising from a long bone: report of two cases. Int J Surg Pathol. 1-7. PMID: 33750231.
  • Bell P, Huber A, Agostini-Vulaj D. 2021. Clinicopathologic features of metastatic small cell carcinoma of the prostate to the liver: a series of four cases. Diagn Pathol. 16(1): 1-6. PMID: 33892760.
  • Baumgartner JM, Srivastava A, Melnitchouk N, Drage M, Huber A, Gonzalez R, Bell P, Wu E, Resnick M, Turaga K, Poli E, Esquivel J, Deneve J, Kelly K, Veerapong J, Lowy A. 2021. A Multi-institutional Study of Peritoneal Recurrence Following Resection of Low-grade Appendiceal Mucinous Neoplasms. Ann Surg Oncol. 28(8): 4685-4694. PMID: 33415564.
  • Bell P, Huber A, Drage M, Barron S, Findeis-Hosey J, Gonzalez R. 2020. Clinicopathologic Features of Low-grade Appendiceal Mucinous Neoplasm: A Single-institution Experience of 117 Cases. Am J Surg Pathol. 44 (11): 1549-1555. PMID: 32796173.
  • Bell P, Huber A, and DeRoche T. 2020. Along for the Ride: Intrahepatic Cholangiocarcinoma   with Concomitant LECT2 Amyloidosis. Case Reports in Pathology. 16: 1-4. PMID: 32724695.
  • Bell P, Thung S, Liu X, Levstik M, Zhang D, Liao X. 2019. Hepatocellular Adenoma Arising in Nodular Regenerative Hyperplasia in a Patient with Systemic Lupus Erythematosus. Pathology - Research and Practice. 215:1-4. PMID: 31810588. 
  • Bell P, DeRoche T, Huber A. 2019. Mixed Acinar-Endocrine Carcinoma (MAEC) Arising in Duodenal Pancreatic Heterotopia. Case Reports in Pathology. 2019: 1-5. PMID: 31565458.
  • Bell P, Israel A, Dunn A, Liao X. 2019. Primary Dedifferentiated Amelanotic Anorectal Melanoma: A Rare Case Report, International Journal of Surgical Pathology. 2019:1-6. PMID: 31232138.
  • Refaai M, Riley P, Mardovina T, Bell P. 2018. The Clinical Significance of Fibrin Monomers. Thrombosis & Hemostasis. 118: 1856-1866. PMID: 30312978.