PT - JOURNAL ARTICLE AU - Julian, Katherine AU - Vasekar, Monali TI - Thoracic splenosis: an important consideration in oncology patients AID - 10.1136/bcr-2023-257091 DP - 2023 Nov 01 TA - BMJ Case Reports PG - e257091 VI - 16 IP - 11 4099 - http://casereports.bmj.com/content/16/11/e257091.short 4100 - http://casereports.bmj.com/content/16/11/e257091.full SO - BMJ Case Reports2023 Nov 01; 16 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.