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Related Experiment Video

Updated: Nov 27, 2025

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis
10:52

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Ipilimumab (Immune Checkpoint Inhibitors) Hypophysitis.

Margot Stagnetto1, Patrick Mailleux1

  • 1UCL, BE.

Journal of the Belgian Society of Radiology
|December 2, 2020
PubMed
Summary

Hypophysitis, a side effect of Ipilimumab immunotherapy, can mimic other conditions on medical imaging. Accurate diagnosis is crucial to distinguish it from metastasis, ensuring appropriate patient management.

Area of Science:

  • Oncology
  • Immunology
  • Radiology

Background:

  • Ipilimumab is an immune checkpoint inhibitor used in cancer therapy.
  • Hypophysitis is an inflammatory condition affecting the pituitary gland.
  • Distinguishing treatment-related hypophysitis from metastatic disease is clinically significant.

Observation:

  • Hypophysitis induced by Ipilimumab presents specific imaging characteristics.
  • Pituitary inflammation can manifest similarly to neoplastic lesions on imaging.
  • Radiologists and oncologists must be aware of this potential pitfall.

Findings:

  • Ipilimumab-associated hypophysitis requires careful radiological assessment.
  • Imaging findings of hypophysitis may overlap with those of metastasis.
Keywords:
AutoimmuneMRIhypophysitisimmune checkpoint inhibitors

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  • Early identification prevents misdiagnosis and inappropriate treatment.

    • Implications:

    • Accurate differentiation of hypophysitis from metastasis is vital for patient care.
    • Understanding this side effect improves the safety and efficacy of Ipilimumab therapy.
    • This distinction impacts subsequent treatment decisions in cancer patients.