<unk> s are rarely life-threatening, and the common subcutaneous<unk> s are not a serious condition.<unk> s growing in internal organs can be more dangerous; for example,<unk> s in the gastrointestinal tract can cause bleeding, ulceration, and painful obstructions (so-called "malignant by location", despite being a benign growth histologically). Malignant transformation of<unk> s into<unk> rcomas is very rare, and most<unk> rcomas are not produced from pre-existing benign lesions. A few cases of malignant transformation have been described for bone and kidney<unk> s, but it is possible that these few reported cases were well-differentiated<unk> rcomas in which the subtle malignant characteristics were missed when the tumor was first examined. Deep<unk> s have a greater tendency to recur than superficial<unk> s because complete surgical removal of deep<unk> s is not always possible. The presence of multiple<unk> s,<unk> tosis, is more commonly encountered in men. Some superficial<unk> s can extend into deep fascia and may complicate excision.<unk> rcoma is found in 1% of<unk> s and is more likely to occur in lesions of the lower extremities, shoulders, and retroperitoneal areas. Other risk factors for<unk> rcoma include large size (>5 cm), associated with calcification, rapid growth, and/or invasion into nearby structures or through fascia into muscle tissue.
Lipoma
Liposarcoma
Askin's tumor
Lipomatosis
Breast cyst
Hibernoma
Condyloma
Teratoma