{Reference Type}: Case Reports
{Title}: Benign lymphoid hyperplasia mimicking oligometastasis from non-small cell lung cancer after stereotactic ablative radiotherapy.
{Author}: Hama Y;Tate E;
{Journal}: Klin Onkol
{Volume}: 35
{Issue}: 6
{Year}: 2022
暂无{DOI}: 10.48095/ccko2022482
{Abstract}: <B>BACKGROUND: </B>Benign lymphoid hyperplasia (BLH) is a rare lymphoproliferative disorder of normal polyclonal B lymphocytes, but is sometimes difficult to distinguish from malignancy.<BR><B>METHODS: </B>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.<BR><B>CONCLUSIONS: </B>In a patient with suspected oligometastasis after SABR for NSCLC, caution should be exercised before undergoing SABR for oligometastasis because BLH may be present.