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Soft-tissue sarcomas commonly originate in the upper body, in the shoulder or upper chest. Some symptoms are uneven posture, pain in the trapezius muscle, and cervical inflexibility [difficulty in turning the head]. [12] The most common site to which soft-tissue sarcoma spreads is the lungs. [13]
The tumors can be quite large (up to 20 cm), although most are around 5 cm. [4] A high power photomicrograph of an elastofibroma. By microscopie view, there is an admixture of heavy dense bands of collagenous tissue dissected by fat and abnormal elastic fibers. The elastic fibers are often quite large and are easily identified.
A lipoma is a benign tumor made of fat tissue. [1] They are generally soft to the touch, movable, and painless. [1] They usually occur just under the skin, but occasionally may be deeper. [1] Most are less than 5 cm (2.0 in) in size. [2] Common locations include upper back, shoulders, and abdomen. [4]
The histologic appearance is non-specific and overlaps with MPNST and fibrosarcoma. H&E stain. A synovial sarcoma (also known as malignant synovioma[1]) is a rare form of cancer which occurs primarily in the extremities of the arms or legs, often in proximity to joint capsules and tendon sheaths. [2] It is a type of soft-tissue sarcoma.
Sclerosing epithelioid fibrosarcoma (SEF) is a very rare malignant tumor of soft tissues that on microscopic examination consists of small round or ovoid neoplastic epithelioid fibroblast-like cells, i.e. cells that have features resembling both epithelioid cells and fibroblasts. [1] In 2020, the World Health Organization classified SEF as a ...
MLS tumors are located in deep-seated soft tissues of the thighs (65–80% of cases), lower legs (10–15% of cases), retroperitoneum (8% of cases), and arms (5% of cases). In about one-third of cases, these tumors metastasize to other soft tissue sites (e.g. retroperitoneum, thorax, or other extremity), skeletal bone, and/or lung.
Soft tissue. Micrograph of a tendon. Hematoxylin and eosin stain. Soft tissue connects and surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. [1][2] Soft tissue is tissue in the body that is not hardened by the processes of ...
Oncology. The term fibromatosis refers to a group of soft tissue tumors [1] which have certain characteristics in common, including absence of cytologic and clinical malignant features, a histology consistent with proliferation of well-differentiated fibroblasts, an infiltrative growth pattern, and aggressive clinical behavior with frequent ...