Dedifferentiated Liposarcoma of the Transverse Colon

摘要

While liposarcoma is one of the most common soft tissue sarcomas, it is rarely seen within the gastrointestinal tract, and even less frequently seen within the colon. Dedifferentiated liposarcoma is a subtype of liposarcoma, which along with the pleomorphic subtype is considered a high-grade, aggressive tumor; both possess the ability to metastasize and are associated with decreased survival. Despite complete resection, recurrence is common. While surgical excision is the cornerstone of treatment for liposarcoma of the colon, there is no consensus on adjuvant therapies. We present the case of a 66-year-old woman who presented with abdominal pain with rectal bleeding and was found on colonoscopy to have a high-grade dedifferentiated liposarcoma of the transverse colon. She underwent robotic segmental colectomy. Due to absence of nodal involvement or distal metastasis, adjuvant therapy was not administered. On 1-year follow-up, the patient remains disease free.