Lump on the hollow space of left clavicle. Could this be hematoma, cyst or lymphoma?
Patient: Several days ago I noticed a very soft lump in the hollow space of my left clavicle.  It is painless and measures about 3 cm by 5 cm. I went to the doctor today and he had blood drawn for a CBC and scheduled me for an ultrasound next week.  he told me it could be a hematoma or a cyst or lymphoma. If I injured my shoulder in January could this soft tissue lump be from that ?  I am very concerned since cancer runs in my immediate family. Doctor: Hello!  Thank you for the query.  First of all some good news for you. Most of such lumps are benign lesions and not a cancer for sure. Yes, it can be a hematoma caused by the trauma in January (sometimes blood collection can stay in the tissues for years). It can be also a cyst or lipoma (NOT lymphoma). All mentioned types of lumps are benign and can be easily diagnosed with an ultrasound.  Hematoma should be drained with small incision. Cyst or lipoma can be removed and send for histopathology to make sure no cancer is present.  Hope this will help. Regards.