Ole-Petter Riksfjord Hamnvik MD

PubMed

• Injectable Estradiol Monotherapy Effectively Suppresses Testosterone in Gender-Affirming Hormone Therapy.
  Aaron L Misakian, Danit Ariel, Erika A Sullivan, Gagandeep Singh, Danielle Loeb
  Endocrine Practice. 2025-11-01
• Consensus-based disease definitions for endocrine immune-related adverse events of immune checkpoint inhibitors.
  Ling Zhu, Yee-Ming M Cheung, Cherie Chiang, Emily J Gallagher, Ole-Petter R Hamnvik
  Journal for Immunotherapy of Cancer. 2025-10-15
• Comparing radiologically evident injuries among cisgender and transgender women.
  Rohan Raj Chopra, Krishna Patel, Bernard A Rosner, Tatiana C Rocha, Alejandra Maria Duran-Mendicuti
  Injury Prevention. 2025-09-09

Journal Articles

• Morbidity and mortality in craniopharyngioma patients after surgery.  
  Crowley RK, Hamnvik OPR, O’Sullivan EP, Behan LA, Smith D, Agha A, Thompson CJ, Clinical Endocrinology
• Leptin and soluble leptin receptor (sOB-R) correlate with anthropometric measurements and metabolic risk factors at baseline, and are predictive of some of these at tw...  
  Hamnvik OPR, Liu X, Kim EH, Gong H, Christiani D, Christophi C, Petrou M, Kales S, Mantzoros CS., Metabolism
• Diffuse large B-cell lymphoma with isolated bone marrow involvement presenting with secondary cold agglutinin disease.  
  Ní Áinle F, Hamnvik OPR, Gulmann C, Bermingham C, Kelly J, McEvoy P, Murphy P., International Journal of Laboratory Hematology

Books/Book Chapters

• Handbook for primary care in resource-poor settings. 
  Chapter: Thyroid disease 
  Hamnvik OPR, Alexander EKEditors: Ard KL, Rogers E.Boston
• The new intern’s guide to Beaumont Hospital. 
  Chapter: The endocrine intern. 
  Hamnvik OPR.
• Internal Medicine Resident Handbook 2010-2011. 
  Chapter: Faulkner Hospital. 
  Hamnvik OPREditors: Kostas T, Brim N.Boston, MA

Abstracts/Posters

• Hypothalamic and endocrinological characteristics of patients with craniopharyngioma.
  Hamnvik OPR, Crowley R, Smith D, Thompson CJ., Poster, Irish Endocrine Society Annual Meeting., Galway, Ireland
• Hypothalamic obesity is common in patients undergoing neurosurgical procedures and is unrelated to surgical approach.
  Crowley RK, Hamnvik OPR, Agha A, Thompson CJ, Poster, 15th European Congress on Obesity., Budapest, Hungary
• Thompson CJ. Insulin resistance in craniopharyngioma patients compared to an obese and overweight control population.
  Crowley RK, Ashley D, Hamnvik OPR, Behan LA, O’Sullivan EP, Agha A, Smith D, O’Gorman D, Oral presentation, Irish Endocrine Society Annual Meeting, Maynooth, Co Kildare, Ireland