Type:
Educational Exhibit
Keywords:
Metastases, Cancer, Surgery, Education, Ultrasound, MR, CT, Soft tissues / Skin, Pelvis, Abdomen
Authors:
M. Camargo Montanari, B. Diaz-Barroso, C. G. Linares Villavicencio, M. Hernández García, F. cabrera canal, M. Del Palacio Salgado, M. A. Cruz Díaz; Alcalá de Henares. Madrid/ES
DOI:
10.1594/ecr2018/C-3216
Background
Sarcomas are a large and diverse group of malignant tumours of mesenchymal origin.
It can be divided in soft tissue sarcomas and bone sarcomas.
Soft tissue sarcomas affect all ages and can arise anywhere in the body.
Represent less than 1% of malignant tumours.
Those sarcomas that arise in the abdomen and pelvis can appear in retroperitoneum,
peritoneal cavity and abdominal wall.
When a mass is discovered in the retroperitoneum,
soft-tissue sarcoma should be considered at the top of the differential diagnosis if the mass cannot be shown to originate from a visceral organ.
Liposarcoma and leiomyosarcoma are the most common intraabdominal soft tissue sarcomas,
and the retroperitoneum is the most common location.
Gastrointestinal stromal tumour is the most common intraperitoneal sarcoma.
Clinical manifestations and,
often,
imaging findings are non-specific.
The World Health Organization classification is the accepted standardization of nomenclature for soft-tissue sarcomas.
Table 1: The World Health Organization classification of Soft-Tissue Sarcoma
References: World Health Organization