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Immunotherapy-Induced Sarcoid-Like Reaction: A Shrewd Imitator
Hassaan Yasin1, Vivek Yadala1, Noman Ahmed Jang Khan1
1Marshall University, Huntington, WV, USA.
Journal of Investigative Medicine High Impact Case Reports
|April 13, 2021
Summary
This case highlights immunotherapy-induced sarcoid-like reaction (SLR), a rare adverse effect that can mimic disease progression. Early steroid treatment resolved SLR symptoms, emphasizing the need for careful diagnosis in patients undergoing immunotherapy.
Area of Science:
- Oncology
- Immunology
- Radiology
Background:
- Metastatic melanoma treatment often involves combination immunotherapy.
- Immunotherapy-related adverse effects (irAEs) can complicate treatment and mimic disease progression.
Observation:
- A patient with metastatic melanoma developed increased hypermetabolic activity post-immunotherapy, initially suggesting disease progression.
- Further investigation revealed a granulomatous process consistent with a sarcoid-like reaction (SLR).
Findings:
- The sarcoid-like reaction (SLR) was successfully treated with corticosteroids.
- Positron-emission tomography (PET) scans confirmed resolution of SLR hypermetabolic activity after steroid initiation.
Implications:
- Immunotherapy-induced sarcoid-like reactions (SLR) are rare but important irAEs to recognize.
- Distinguishing SLR from actual disease progression is crucial for appropriate patient management and treatment decisions.
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