Cases reported "Muscle Neoplasms"

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1/35. Intramuscular hemangioma of the masseter muscle.

    Intramuscular hemangiomas (IMH) are uncommon tumors of the head and neck, but often occur in the trunk and extremities. When present in the head, the masseter muscle is the most frequently involved site, although constituting only 0.8% of all hemangiomas. Accurate preoperative diagnosis is uncommon without cytology or biopsy. A case of IMH of the masseter muscle in a 24-year-old Turkish woman is presented. Clinical, radiologic and histologic findings and treatment modalities are reviewed.
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2/35. Chloroma of the masseteric muscle.

    Chloroma (leukemic infiltrate or granulocytic sarcoma) is a localized extramedullary mass of immature granulocytic cells. They are uncommon tumors that usually occur in patients with leukemia, mostly of the myeloid type. Involvement in the head and neck region is rare. Granulocytic sarcomas of the face, maxilla, paranasal sinuses, temporal bone, and pharynx have all been documented in the past. We present the first reported case of a granulocytic sarcoma involving the masseteric muscle in an 8-month-old white male diagnosed with acute myeloid leukemia (AML). The lesion resolved with chemotherapy but the patient subsequently died. This case reaffirms the importance of including chloroma in the differential diagnosis of lesions in patients with AML and the prognostic value they hold.
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3/35. Dermatological presentations of infantile myofibromatosis: a review of 27 cases.

    Twenty-seven cases of infantile myofibromatosis presenting with dermatological manifestations were retrospectively reviewed. Approximately 80% were solitary lesions and 50% of these appeared on the head and neck. Around 60% were present at or soon after birth. Most lesions were dermal or subcutaneous, although some were intramuscular and intraosseous. The clinical appearance was non-specific leading to frequent misdiagnosis. While most patients presented with nodules, atrophic depressed lesions and warty pedunculated lesions were also seen. Although 7% of lesions recurred after excision, spontaneous resolution was also documented.
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4/35. adult rhabdomyoma of the extremity: a case report and review of the literature.

    The adult rhabdomyoma is a rare, benign skeletal muscle neoplasm that usually occurs in the head and neck. A case report of an adult rhabdomyoma arising in the thigh is presented with a review of the literature. This is the first case of an extremity adult rhabdomyoma to be reported. It is also the largest at 13 centimeters. Distinction from a highly differentiated rhabdomyosarcoma is important. Recent chromosomal studies suggest that the adult rhabdomyoma is a true neoplasm. Total resection is curative but the lesion may recur if incompletely excised.
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5/35. Cystic hygroma of the gluteal region.

    Cystic hygromas occur most commonly in the neck. Rarely are they known to involve the axilla, groin, mediastinum, retroperitoneum, pelvis, mesentery, omentum and spleen. We successfully managed a case of cystic hygroma of gluteal region in a one and half year old child who presented with a cystic, non transilluminant swelling in this region since birth. The diagnosis of cystic hygroma was made by surgery and subsequently confirmed after histopathological examination. Because of rarity of cystic hygroma in gluteal region this case in being reported.
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6/35. Metastatic soft tissue squamous cell carcinoma.

    Metastatic squamous cell carcinoma of the soft tissue is extremely rare. We report two patients with soft tissue metastasis from squamous cell carcinoma of the cervix in one and scalp in another. Case 1: A 63-year-old black woman with a history of cervical cancer presented with a painful mass over the right scapula. An incisional biopsy revealed squamous cell carcinoma. She underwent radiation treatment followed by wide local excision with en bloc resection and a myocutaneous flap closure. Case 2: A 46-year-old white man with a history of squamous cell carcinoma of the scalp and two kidney transplantations requiring long-term immunosuppression presented with a 2-month history of a left proximal arm mass. magnetic resonance imaging revealed that the mass was within the triceps muscle and fixed to the humerus. biopsy revealed squamous cell carcinoma. He underwent a shoulder disarticulation for tumor invasion into the adjacent humerus and neurovascular bundles. The patients remain disease-free at 12 and 8 months, respectively. To our knowledge there are no reports of soft tissue squamous cell carcinoma metastatic from the cervix and only rare cases from the lung, head, and neck. The optimal mode of treatment and prognosis is undefined in these patients because of its rare incidence. Surgery and radiation with curative intent were used.
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7/35. Intramuscular spindle cell lipoma: Case report and review of the literature.

    Spindle cell lipoma (SCL) is a relatively rare adipocytic neoplasm and is histologically characterized by a mixture of uniform spindle cells and mature fat cells. It occurs predominantly in male patients aged 45-65 years, and in most cases it arises in the subcutaneous tissue of the neck or shoulder. Although the neoplasm sometimes affects unusual sites, only three cases have been reported in which the lesion was intramuscular. Here we present a case of SCL arising in skeletal muscle; to our knowledge, the first report in 10 years. The tumor occurred in the neck of a 50-year-old male patient. magnetic resonance imaging (MRI) revealed a lipomatous tumor within the right trapezius muscle. The tumor was localized beneath the fascia and was excised completely at surgery. Histologically, the tumor was typical of a spindle cell lipoma with no evidence of malignancy. An immunohistochemical study revealed all spindle cells were strongly positive for CD34. Differential diagnosis is discussed with a review of the literature.
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8/35. Hibernoma of the neck.

    A hibernoma is a rare, benign, soft-tissue tumor composed of cells similar to those of brown adipose tissue. Only nine cases in the cervical area have been reported. Typically, hibernomas are asymptomatic and slow growing. Adequate treatment consists of complete excision. We describe an additional case of neck hibernoma and review the literature to clarify a pathologic condition rarely included in the differential diagnosis of cervical masses.
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keywords = neck
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9/35. A multifocal neurinoma of the hypoglossal nerve with motor paralysis confirmed by electromyography.

    A rare case of neurinoma in a 72 year-old Japanese woman derived from the hypoglossal nerve is reported. The tumour was composed of three interconnected nodules occurring simultaneously in the left submandibular and sublingual regions. The lesion, which presented as a neck mass, caused a slight left-sided hemiparesis of the tongue with tongue deviation to the affected side not noticed by the patient. An electromyographic (EMG) study revealed decreased muscle activity on the left side of the tongue muscle, indicating dysfunction of the hypoglossal nerve. EMG was useful for diagnosis.
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keywords = neck
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10/35. thoracic duct cyst presenting as an hour-glass shaped mass in the left supraclavicular area: case report.

    thoracic duct cyst presenting as an hour-glass shaped mass in the left supraclavicular area: case report. thoracic duct cysts are a very rare entity in the head and neck pathology. We present a case of a 52 year-old man, who was referred to our service, complaining by a 30 days left cervical mass, with no other symptoms. A 6 cm cystic mass was revealed after ultrasonography and CT. Needle aspiration confirmed the presence of lymph in the cyst. The treatment was simple excision. Special care was taken to ligate the connected lymphatic vessels.
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