ABSTRACT
Intramuscular lipoma is an uncommon variant of lipoma that occurs inside muscle tissue. Pathogenesis is thought to be related to neoplastic activity of mesenchymal stem cells, but there still is not an established theory. This entity can be found in almost all areas of the body, mostly within or in connection with skeletal muscle tissue. We have encountered an atypical intramuscular lipoma located in the epidermal layer of the right thigh of an otherwise healthy 35-year-old female. The superficial, protruding skin mass resembled a sebaceous nevus or skin malignancy but was histologically composed of well-defined adipocytes between a mixture of muscle fibers, corresponding with the diagnosis of intramuscular lipoma. Intramuscular lipoma of the skin has never been reported before; thus, the authors suggest the classification “cutaneous” intramuscular lipoma to describe lesions located in the dermal or epidermal layer.
ABSTRACT
ipomas are the common benign tumors of adipose tissue, but sometimes clinically and grossly they simulate malignancy. Lipomas can also occur in deep soft tissues. One of its rare subtype is Intramuscular lipoma which arise within the skeletal muscle fibers. Most common site is trunk, but can also occur in thigh and head and neck. 20 % recur due to incomplete excision. Histopathology is must for confirmation of the diagnosis. Prognosis of intramuscular lipoma is very good and marginal excision is the treatment of choice. We report a case of a 23 Year old female, who presented in surgery OPD with chief complaint of swelling at upper right side of back since 1 year. She got operated for the same 8 months back but presented with similar complaint at same site after 4 months. Excision of the swelling was done and sent for histopathology. On gross examination skin covered soft tissue piece, grayish brown in color was received. Histopathology revealed Infiltrating intramuscular lipoma. The case was reported because of its rarity.
ABSTRACT
Lipomas are the most common type of soft tissue tumors. Intramuscular lipoma is a rare type of deep-seated lipomas, which arise within the skeletal muscle fibres. It can arise in the background of history of trauma, obesity, chronic irritation, metabolic disorders, etc. Lipomas are usually benign, but sometimes clinically and grossly, they simulate malignancy. Intramuscular lipomas also need separation from muscular dystrophies. Histopathology is must to differentiate. Prognosis of intramuscular lipoma is very good and marginal excision is the treatment of choice. We report a case of 32 years old female, who presented with a painless swelling shoulder since six months. She had history of trauma eight years back. Grossly, the received mass was yellow-tan coloured, well circumscribed swelling of soft tissue along with muscle. Histopathologically, features are consistent with intramuscular lipoma. We report this case because of its rarity.
ABSTRACT
Infiltrating lipoma in supraspinatus muscle on the shoulder is very rare. We performed open excision and rotator cuff repair on a patient who had infiltrating lipoma in supraspinatus muscle with partial tear of the supraspinatus tendon. We achieved a satisfactory outcome on one-year follow-up magnetic resonance imaging. We report on the case with a review of the literature.
Subject(s)
Humans , Follow-Up Studies , Lipoma , Magnetic Resonance Imaging , Rotator Cuff , Shoulder , Shoulder Joint , TendonsABSTRACT
Two cases of intramuscular lipoma occurring in the cheek of a 39-year-old and of a 55-year-old Japanese males are presented. These were excised by the intraoral approach. Histopathologically, these lesions were composed of the adipose cell-like tumor cells infiltrating in the striated muscles. There has been no evidence of tumor recurrence after operation.
ABSTRACT
Two cases of intramuscular lipoma occurring in the cheek of a 39-year-old and of a 55-year-old Japanese males are presented. These were excised by the intraoral approach. Histopathologically, these lesions were composed of the adipose cell-like tumor cells infiltrating in the striated muscles. There has been no evidence of tumor recurrence after operation.
ABSTRACT
Intramuscular lipoma, also referred to as an infiltrating lipoma, is a rare, benign uncapsulated tumor that originates between skeletal muscle bundles and infiltrates through the intramuscular septa. These lipomas are generally found on the upper or lower limbs, but rarely occur on the face. We report a case of intramuscular lipoma of the chin, which has not ever been reported in Korea. Histopathological findings showed mature adipocytes infiltrating muscle in a diffuse manner. The lesion was excised completely and has shown no evidence of recurrence.
Subject(s)
Adipocytes , Chin , Korea , Lipoma , Lower Extremity , Muscle, Skeletal , RecurrenceABSTRACT
Intramuscular lipomas are benign soft-tissue mesenchymal tumors which rarely occur in the region of the head. These tumors present as slow-growing, generally painless masses and are easily misdiagnosed initially as epidermal inclusion cysts. We describe a 44-year-old woman who presented with an intramuscular lipoma of the frontalis muscle.
Subject(s)
Adult , Female , Humans , Head , LipomaABSTRACT
Intramuscular lipoma is a rare, benign uncapsulated tumor. It is also called infiltrating lipoma because of its infiltrative growth pattern which, deeply localized, seizes the skeletal muscle. The only obvious symptom is a palpable mass. Microscopically, fat tissue shows up between the muscle fibers. We report a case of intramuscular lipoma. The patient, a 60-year-old man, developed a nut-sized, painless, skin-colored tumor on the forehead. Laboratory studies were negative or within the normal range. Histopathological findings showed mature lipocytes infiltrate muscle in diffuse manner. The lesion had been excised completely and showed no evidence of recurrence.
Subject(s)
Humans , Middle Aged , Adipocytes , Forehead , Lipoma , Muscle, Skeletal , Recurrence , Reference ValuesABSTRACT
Lipomas are common soft tissue that are usually located in the subcutaneous tissue. And intramuscular lipomas commonly arise in the upper and lower extremities, where they usually involve the large muscles. Intramuscular lipoma, also referred to as an infiltrating lipoma, is an unusual benign slow growing tumor composed of mature fat cell interdigitating with skeletal muscle. However, intramuscular lipomas are exceedingly rare in the face. We have been experienced a case intramuscular lipoma that located in the malar area. Because of the rarity of these tumors and their propensity to recur without adequate surgery, the case report is presented here. Achievement of surgical margin is essential as the recurrent rate may be as high as 15% to 62.5% without complete excision.