What should you know about insertion of tissue expander?

During an operation, a surgeon positions the empty expander beneath the skin and may place it under chest muscle or another planned tissue layer. A valve allows the clinical team to add fluid during follow-up visits, slowly stretching the covering tissues. The expander is temporary; it is later exchanged for a permanent implant or another reconstructive option when healing and treatment planning allow.

The device may feel firm or tight as it fills. The shape can change between visits, and the final result depends on your tissues, surgery and wider care plan. Your surgeon will explain whether reconstruction is immediate or staged.

Before surgery, share every medicine, supplement, allergy and previous operation with the team. Afterward, follow wound-care and activity instructions, keep scheduled expansion appointments and take prescribed pain relief as directed. Avoid pressure, lifting or strenuous movement until your surgeon clears it. A small amount of tightness can follow filling, but report discomfort that is severe, persistent or suddenly different.

You can read about the device in Tissue Expander and discuss how the procedure fits within Breast Reconstruction. Ask how scars, drains, sleep position and future treatment may affect your plan.

Contact the surgical team promptly for increasing redness, warmth, swelling, drainage, wound separation, fever, worsening pain or a sudden change in the expander's position. Seek urgent help for chest pain, severe breathing difficulty, fainting or rapidly spreading swelling. Do not puncture, press or attempt to fill the device yourself.

Ask why an expander is recommended, where it will sit, how often filling may occur, what sensations are expected, when exchange surgery is considered and how chemotherapy or radiotherapy could change timing. Confirm who to call outside clinic hours.