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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] It is possible to have several lipomas. [3]
Chondroid lipoma is an uncommon soft tissue fatty tumor that can develop in deeper or superficial tissues. It often manifests as a painless mass. [3] The subcutis, superficial muscular fascia, or skeletal muscles of the limbs and limb girdles, trunk, head, and neck are where the majority of lesions are located. [4]
Myelolipoma (myelo-, from the Ancient Greek μυελός 'marrow'; lipo, 'of, or pertaining to, fat'; -oma 'tumor or mass'; also myolipoma) is a benign tumor-like lesion composed of mature adipose (fat) tissue and haematopoietic (blood-forming) elements in various proportions. [1] Myelolipomas can present in the adrenal gland, [2] or outside of ...
The white tumor infiltrates the adjacent skeletal muscle (red tissue – lower left) and fat (yellow tissue – upper left). This tendency for invasion of adjacent normal tissues and structures is the reason that desmoid-type fibromatosis has a relatively high rate of local recurrence, even after surgical removal.
Dercum's disease is a rare condition characterized by multiple painful fatty tumors, called lipomas, that can grow anywhere in subcutaneous fat across the body. [1] Sometimes referred as adiposis dolorosa in medical literature, Dercum’s disease is more of a syndrome than a disease (because it has several clinically recognizable features, signs, and symptoms that are characteristic of it and ...
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.
It usually appears in adult life, and usually on the axilla, knee, ear, arm, scalp and the lower trunk. [3] In both multiple and solitary variants, the histopathology shows variable amounts of mature lipocytes within the dermis. Occasionally, there is an excessive fibrocollagenous tissue proliferation.
The diagnosis of LPF depends on its clinical presentation almost exclusively in newborn and young children and, most importantly, its histopathology as determined on biopsied intact tissue or fine-needle aspiration to obtain a sampling of the tumor's cells. Intact tissue samples typical show abundant mature-appearing adipose (i.e. fat) tissue ...