Type:
Educational Exhibit
Keywords:
Cancer, Education, Ultrasound, MR, Oncology, Musculoskeletal system, Musculoskeletal soft tissue
Authors:
N. RUEDA RUIZ1, O. Rivero2, A. R. VASQUEZ3; 1BOGOTA, DI/CO, 2bogotá, Bogota/CO, 3bogotá, bogotá/CO
DOI:
10.26044/ecr2019/C-2191
Background
INTRODUCTION
Soft tissue tumors are a complex group of lesions with wide differences between those ones.
The incidence of benign tumors is significantly higher with respect to malignant tumors (100: 1).
Soft tissue tumors can occur anywhere in the body,
mostly in the extremities (67% of cases),
chest wall and retroperitoneum.
Reference: Seminars of Roentgenology 2010; 45(4): 277 – 297 and Surgical Oncology Clinics of North America2014; 23: 911 – 936.
WHO classification (2013):
- Adipocytic tumors
- Smooth muscle tumors
- Skeletal muscle tumors
- Nerve sheath tumors*
- Chondro-osseous tumors
- Fibroblastic/myofibroblastic tumors
- So-called fibrohistiocytic tumors
- Pericytic/perivascular tumors
- Vascular tumors
- Gastrointestinal stromal tumor*
- Tumors of uncertain differentiatiom
- Undifferentiated/unclassified sarcomas*.
*New
Consider the four categories that WHO defines (2013) according to biological treatment,
to make the conclusions of the reports.
1. Benign
- Intermediate with aggressive locally component
- Intermediate with rarely metastatic potential
- Malignant.
About imaging assenment
•Radiographs are limited in local staging of masses,
but they provided information about the location and the appearance of other structures like bones and soft-tissue mineralization,
for example.
•In many cases,
imaging is limited to distinguish between benign and malignant soft-tissue lesions.
•The first step is to confirm the presence of a mass and to assess imaging characteristics that can help to narrow the differential diagnoses.
In table 1 we expand the information regarding when a diagnostic modality is most indicated and the advantages and disadvantages of each one.
Fig. 2: Table 1.
Table 1. Orientation chart of the different diagnostic modalities.
MR: Magnetic resonance.