Spontaneous Angiolipoma in Autologous Flap Reconstruction.

Breast cancer recurrence after autologous flap reconstruction is rare and typically occurs at the contact zone between the flap and the native tissue. When a new lesion is found in a reconstructed breast without the characteristic appearance of benign entities such as fat necrosis, definitive tissue diagnosis is often warranted to rule out recurrence or metastasis. Angiolipomas are rare, benign lipomatous tumors that have nonspecific imaging appearances and are thus frequently biopsied or excised for definitive diagnosis. Here, we report a case of a new breast mass found at the contact zone of a reconstructed breast in a patient with a history of ductal carcinoma in situ (DCIS), which was ultimately excised and proven to be an angiolipoma.