Deep Vein Thrombosis (DVT): The patient's recent history of surgery and immobility increases the risk of DVT. Symptoms such as leg edema, prickling sensation, and numbness, especially with activities like walking, are consistent with DVT.

Cellulitis or Infection: Post-surgical patients are at risk for infections, and the symptoms of edema, burning sensation, and numbness could be indicative of a cellulitic process, especially if there's a history of recent catheter use or surgical wound complications.
Nerve Compression or Damage: The recent surgery could have resulted in nerve compression or damage, leading to numbness, tingling, and pain in specific areas of the leg.
Lymphedema: Although less common in the immediate postoperative period, lymphedema could be considered, especially if there was any disruption to lymphatic drainage during surgery.

Pulmonary Embolism (PE): While the symptoms are localized to one leg, the recent history of hemothorax and surgery puts the patient at high risk for PE, which could be life-threatening. Any suspicion of PE warrants immediate investigation.
Compartment Syndrome: This is a medical emergency that could present with pain, numbness, and swelling in the affected limb. Although the symptoms described do not perfectly align with compartment syndrome, it's crucial to consider due to its urgency.

Neuroma or Nerve Tumor: Although rare, a neuroma or nerve tumor could potentially cause localized numbness, tingling, and pain, especially if the symptoms are very focal.
Vasculitis: Inflammation of the blood vessels could lead to a variety of symptoms including pain, numbness, and swelling in the legs, but this would be an uncommon diagnosis in the immediate postoperative period without other systemic symptoms.
Complex Regional Pain Syndrome (CRPS): This condition can occur after trauma or surgery and is characterized by chronic pain, swelling, and changes in skin temperature and color. While possible, it's less likely given the acute presentation and recent surgical history.