Pathline Expands Medical Team, Appoints Three New Physicians

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Pathline Medical Team

Gregory S. Henderson, MD, PhD

Chief Medical Officer

  • Specialty: Breast, Gastrointestinal, Gynecologic, & Pulmonary Pathology
  • Education: Vanderbilt University Medical School
  • Residency: Johns Hopkins Hospital, University of Utah & ARUP Reference Laboratories
  • Fellowship: Vanderbilt University Medical Center | Gastrointestinal Pathology, Breast & Gynecologic Pathology | Pulmonary Pathology
  • Board Certifications: American Board of Pathology- Anatomic & Clinical Pathology


  • Boggan JC, Walmer DK, Henderson GS, Chakhtoura N, McCarthy SH, Beauvais HJ, Smith JS. “Vaginal self-sampling for human papillomavirus infection as a primary cervical cancer screening tool in a Haitian population”. Sexually Transmitted Diseases. 2015 Nov;42(11):655-59.
  • Mignano JD, Gage I, Piantadosi S, Ye X, Henderson G, Dooley WC. “Local recurrence after mastectomy in patients with T3pN0 breast carcinoma treated without postoperative radiation therapy”. Am J Clin Oncol. 2007 Oct 30(5):466-72.
  • Powell JL, Connor GP, Henderson GS. “Management of recurrent juvenile granulosa cell tumor of the ovary”. Gynecol Oncol. 2001 Apr;81(1):113-6.

Bevan Tandon, MD

Director Hematopathology & Molecular Pathology

  • Specialty: Molecular Genetic Pathology, & Hematopathology
  • Education: Eastern Virginia Medical School
  • Fellowship: University of Pittsburgh School of Medicine| Hematopathology, Washington University in St. Louis School of Medicine | Molecular Genetic Pathology
  • Board Certifications: American Board of Pathology- Anatomic & Clinical Pathology, Molecular Genetic Pathology & Hematology


  • Duncavage, Tandon. “Utility of Next Generation Sequencing in Diagnosis and Monitoring of AML and MDS.” International Journal of Laboratory Hematology 2015 May;37 Suppl 1:115-21
  • Tandon, Swerdlow, et al. “Chronic lymphocytic leukemia/small lymphocytic lymphoma: another neoplasm related to the B-cell Follicle?” Leukemia Lymphoma. 2015 May 26:1-9.
  • Tandon et al. “Nuclear Overexpression of Lymphoid Enhancer Binding Factor 1 Identifies CLL/SLL in Small B Cell Lymphomas.” Modern Pathology 24; 1433-43; 2011 Nov.
  • Duncavage, Uy, Petti, Miller, Lee, Tandon, Gao, Fronick, O’Laughlin, Fulton, Wilson, Jacoby, Cashen, Wartman, Walter, Westervelt, Link, DiPersio, Ley, Welch “Mutational Landscape and Response is Conserved in the Peripheral Blood of AML and MDS Patients During Decitabine Therapy”. Blood. 2017 Mar 9; 129(10):1397-1401.
  • Welch, Petti, Miller, Fronick, O’Laughlin, Fulton, Wilson, Baty, Duncavage, Tandon, Lee, Wartman, Uy, Ghobadi,Tomasson, Pusic, Romee, Fehniger, Stocker-Goldstein, Vij, Oh, Abboud, Cashen, Schroeder, Jacoby, Heath, Luber, Janke, Hantel, Khan, Sukhanova, Knoebel, Stock, Graubert, Walter, Westervelt, Link, DiPersio, Ley. “TP53 and Decitabine inAcute Myeloid Leukemia and Myelodysplastic Syndromes.” New England Journal of Medicine. 2016 Nov 24;375(21):2023-2036.

Douglas Charney, MD

Senior Pathologist

  • Specialty:  Anatomic and Clinical Pathology
  • Subspecialty: Renal Pathology
  • Education: New York Medical College
  • Residency: Beth Israel Medical Center, NY | Anatomic & Clinical Pathology
  • Fellowship: Johns Hopkins School of Medicine | Renal Pathology & Immunopathology
  • Board Certifications: American Board of Pathology- Anatomic & Clinical Pathology


  • Douglas Charney, Kim Solez and Lorraine C. Racusen.  “Nephrotoxicity of Cyclosporine and Other Immunosuppressive and Immunotherapeutic Agents, in Toxicology of the Kidney”, 3rd Edition, December 2004.  Taylor and Francis Books, Inc.
  • Charney DA, Nassar G, Truong L, Nadasdy T.  “Pauci-Immune Proliferative and Necrotizing Glomerulonephritis with Thrombotic Microangiopathy in Patients with Systemic Lupus Erythematosus and Lupus-like Syndrome”.  American Journal of Kidney Disease 2000; 35:1193-206.
  • Douglas A. Charney, Ashutosh Singh and Narcis Aron. “A male  nephrotic patient with rapid decline of renal function”. Nephrology Dialysis Transplantation. 2005;20 (6): 1263

Mariela Losada, MD

Gastrointestinal & Surgical Pathologist

  • Specialty: Gastrointestinal and Surgical Pathology
  • Education: Central University of Venezuela Medical School
  • Residency: Albert Einstein College of Medicine, Montefiore Medical Center
  • Fellowship: New York University Medical Center | Gastrointestinal and Liver Pathology, Surgical Pathology
  • Board Certification: American Board of Pathology- Anatomic Pathology


  • Taouli B, Losada M, Holland A, Krinsky G. “MR Imaging of Hepatocellular Carcinoma”. Gastroenterology 2004; 127: S144-152.
  • West AB, Losada M. “The Pathology of Diverticulosis Coli”. J Clin Gastroenterol, 2004 May-Jun; 38(5 Suppl):S11-6
  • Ye H, Losada M, West AB. “Diverticulosis Coli: Update on a ‘Western’ Disease”. Advances in Anatomic Pathology 2005 Mar;12(2):74-80.
  • Saindane AM, Losada M, Macari M. “Focal Amyloidoma of the Small Bowel Mimicking Adenocarcinoma on CT”. AJR Am J Roentgenol 2005;185:1187-9.

Patricia Dowling, PhD

Director Cytogenetics Laboratory

  • Specialty: Cytogenetics
  • Education: Fordham University Doctor of Philosophy | Molecular & Cell Biopsy
  • Fellowship: Mt. Sinai School of Medicine, Post-Doctoral Fellowship | Clinical Cytogenetics
  • Board Certifications: Diplomate of the American Board of Medical Genetics, New York State Certificate of Qualification, Clinical Cytogenetics and Oncology (FISH)


  • Mascarello, JT, Cooley, LD, Dowling, PK, et al., CLSI. “Fluorescence in situ Hybridization Methods for Clinical Laboratories; Approved Guideline – Second Edition”. CLSI document MMO7-A2. Wayne, Pa: Clinical and Laboratory Standards Institute, 2013
  • Gu J., Smith J.L., Dowling P.K. (2017) “Fluorescence In Situ Hybridization Probe Validation for Clinical Use. In: Wan T. (eds) Cancer Cytogenetics”. Methods in Molecular Biology, vol 1541. Humana Press, New York, NY
  • Dowling, P, chapter author, “Mathematics for the cytogenetic technologist”; chapter 19, in The AGT Cytogenetics Laboratory Manual, Fourth Edition; Editor(s): Marilyn S. Arsham, Margaret J. Barch M.S., CG(ASCP)CM, Helen J. Lawce B.S., CG(ASCP)CM, Wiley, 2017.

Yijun Guo, MD, PhD

Anatomic & Clinical Pathologist

  • Specialty: Genitourinary Pathology
  • Education: Peking University School of Medicine
  • Residency: Drexel University Hospital
  • Fellowships: Albert Einstein College of Medicine | Surgical Pathology.  Armed Forces Institute of Pathology | Genitourinary Pathology
  • Board Certifications: American Board of Pathology- Anatomic Pathology & Clinical Pathology


  • Yijun Guo, MD, PhD, FCAP, USCAP. Guo YJ (co-first author), Zhao Y (co-first author), Tomac AC, Taylor NR, Grinberg A, Lee EJ, Huang S, Westphal H. “Isolated Cleft Palate in Mice with a Targeted Mutation of the LIM Homeobox Gene lhx8”. Proc Natl Acad Sci U S A. 1999 Dec 21;96(26):15002-6. 

James O’Donnell, MD

Anatomic & Clinical Pathologist

  • Specialty: GI and Breast Pathology
  • Education: University of Texas Medical School
  • Residency: St. Luke’s-Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons
  • Fellowship: Mount Sinai Hospital, NY | Gastrointestinal Pathology | Breast Pathology
  • Board Certification:  American Board of Pathology- Anatomic & Clinical Pathology


  • Nagi CS, O’Donnell JE, Tismenetsky M, Bleiweiss IJ, Shabnam Jaffer. “Lobular Neoplasia on  Core Needle Biopsy Does Not Require Excision”.  Cancer 2008; 112:10:2152-2158.

Paul Chu, MD


  • Specialty: Dermatopathology
  • Education: New York University School of Medicine
  • Residency: University of California at San Francisco
  • Fellowship: University of California at San Francisco/Dermatopathology
  • Board Certification: National Board of Medical Examiners – Dermatology & Dermatopathology

Mark Jacobson, MD


  • Specialty: Dermatopathology
  • Education: University of Witwatersrand Medical School
  • Residency: Long Island Jewish Medical Center
  • Fellowship: New York University Medical Center/Dermatopathology
  • Board Certification: American Board of Pathology – Anatomic & Clinical Pathology, American Board of Dermatology and Pathology –Dermatopathology