Solitary Cystic Psoas Muscle Metastasis From Rectosigmoid Adenocarcinoma. (June 2021)

• Record Type: Journal Article
• Authors: Farraj, Kristen; Im, Jaehyuck; Gonzalez, Luis F.; Lu, Andrew; Portnoy, Reid; Podrumar, Alida
• Is Part Of: Journal of investigative medicine high impact case reports. Volume 9(2021)
• Publication Date: 2021-06
• Subjects: colorectal cancer -- psoas -- metastasis -- cystic; Internal medicine -- Periodicals; Medical care -- Periodicals; 616.005
• DOI: 10.1177/23247096211024067
• Languages: English
• ISSNs: 2324-7096

Abstract

The most common subtype of colon cancer is colorectal adenocarcinoma. Compared with other subtypes, such as signet-ring and mucinous, colorectal adenocarcinoma has been found to have lower rates of metastasis. Approximately 20% of colorectal cancer cases present with metastatic disease on initial evaluation. The most common locations for metastasis are the liver, lung, peritoneum, bone, and extra-regional lymph nodes. Metastatic disease to the skeletal muscle, however, is considerably rare. We present a clinical case of a 52-year-old female found to have a cystic iliopsoas muscle metastasis from rectosigmoid adenocarcinoma, initially classified as an infected fluid collection.