Related Experiment Video
Updated: Aug 17, 2025
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
Published on: June 7, 2015
Benign lymphoid hyperplasia mimicking oligometastasis from non-small cell lung cancer after stereotactic ablative
Background:
Benign lymphoid hyperplasia (BLH) is a rare lymphoproliferative disorder of normal polyclonal B lymphocytes, but is sometimes difficult to distinguish from malignancy.
Case:
An 87-year-old man with a history of localized non-small cell lung cancer (NSCLC) was referred for evaluation and treatment of an elastic hard tumor in the left supraclavicular fossa one year after stereotactic ablative radiotherapy (SABR). Whole-body PET scan showed high 18F-fluorodeoxyglucose uptake in the left supraclavicular fossa, and a dia-gnosis of oligometastasis was made. The tumor was homogeneously high signal on T2-weighted image with homogeneous enhancement after contrast administration. Since the palpation and MRI findings were inconsistent with those of metastatic NSCLC, a bio-psy was performed. Pathological and immunohistochemical investigation revealed the lesion to be BLH.
Conclusion:
In a patient with suspected oligometastasis after SABR for NSCLC, caution should be exercised before undergoing SABR for oligometastasis because BLH may be present.
