5 research outputs found
Data underlying the study of the influence of the dry aerosol particle size distribution and morphology on the cloud condensation nuclei activation.
Database containing the experimental and calculated data used in the development of a model to predict the efficiency as cloud condensation nuclei (CCN) of fresh and chemically aged soot particles that includes their size distribution and morphology
Imaging of soft-tissue tumors.
SOFT TISSUE arises from the mesenchyme, which
during development differentiates into fat, skeletal
muscles, peripheral nerves, blood vessels, and fibrous
tissue (1). Soft-tissue tumors are histologically classified
on the basis of the soft-tissue component that
presents the lesion, but this does not imply that the
tumor develops from that tissue (1).
Although imaging cannot always be used to characterize
soft-tissue lesion, clinical history (ie, information
about recent traumas, fluctuating mass size,
malignancies or familial syndromes) and physical examination
(ie, superficial/deep mass, fixity to surrounding
tissue) can help identify lesions that need
biopsy to exclude malignancy (2). Wu and Hochman
(2) report the basic sequences employed to evaluate a
soft-tissue mass; we usually refer to the sequences
reported in Table 1.
Soft-tissue sarcomas are generally larger than 5 cm
and more likely to outgrow their vascular supply with
subsequent infarction and necrosis and heterogeneous
signal intensity on T2-weighted (T2w) images (3).
They respect fascial borders and remain within anatomic
compartments without infiltrating adjacent
structures until late in their development (3,4).
Computed tomography (CT) and magnetic resonance
imaging (MRI) are the current state of art in the proper
staging, evaluation of locoregional involvement, presence
of necrotic areas, infiltration and surrounding tissue,
and surgical and bioptical planning (5\u20138). Since distant
dissemination principally involves lungs, liver, and bone,
CT of the abdomen and the chest is necessary to evaluate
for retroperitoneal lymphadenopathy and metastasis:
CT is more sensitive in the detection of bone cortical
thinning and cortical invasion, while MRI is useful to
evaluate compartmentality, intraarticular tumor extension,
and for the depiction of bone marrow edema (5\u20139).
Our group has undertaken a review of some of the
almost 200 cases of soft-tissue lesions that we have
diagnosed in the last 5 years and that have been collected
in the MIRC database (10). A literature review
was performed using PubMed as well as cited references
within previously published articles and textbooks
for all published studies related to imaging of soft-tissue
tumors, with particular attention to ultrasonography
(US) and MRI findings