RT Journal Article SR Electronic T1 Thoracic splenosis: an important consideration in oncology patients JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e257091 DO 10.1136/bcr-2023-257091 VO 16 IS 11 A1 Julian, Katherine A1 Vasekar, Monali YR 2023 UL http://casereports.bmj.com/content/16/11/e257091.abstract AB Splenosis is the implantation of ectopic splenic tissue after splenic injury or splenectomy. Signs and symptoms of splenosis vary based on anatomic location; however, it remains asymptomatic in many cases. On radiographic imaging, splenosis often appears as a soft tissue mass and can be diagnosed using heat-damaged red blood cell scintigraphy, a non-invasive imaging modality. Radiographic findings of splenosis on imaging may be suspicious for metastatic disease in patients with known solid organ tumours. It is important to have a high degree of suspicion for splenosis with known history of splenic trauma or splenectomy in order to avoid invasive procedures and guide appropriate management.