### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
In excess of a month ago, I fell on my left shin/tibia with the full force of my body weight hitting the edge of the floating dock.  Broke the skin a bit, ankle swelled a bit and bruising mostly around the the ankle.  Now I have have a lumb about the size of a medium marble on the shin. I would not dare touch the shin.  Not even with a razor.  Now tender if bumped or press applied directly. Im still skittish with it at times. My knee seems to ache more. Often after sitting a bit, and I stretch, it feels like something is being pulled away inside.  Kind of like a scab if its on a area that when flexed stretches out the skin.  Not painful but certainly noticeable.  Should I be conderned? tendons/ligaments trying to adhere to the bone?  Bone chipped? Im able to run, cycle, row...  Will lumb go away. This looks like I have some sort of tumorous growth on my shin.

### output:

Hi! Good morning. I am Chat Doctor answering your query. This could be a hematoma (collection of blood) due to the trauma, which has not yet got absorbed. A simple hematoma would gradually get absorbed of its own unless there is persisting oozing or if it gets infected. The exact status could be known by a clinical examination by a surgeon and a fine needle aspiration if need be. Therefore, I would suggest you to get an appointment with a general surgeon for an appropriate diagnosis and further management. Till then, you could go for an anti-inflammatory Chat Doctor. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing Chat Doctor to clear doubts on your health problems. I wish you an early recovery. Chat Doctor.