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11/863. Endometroid adenocarcinoma of the cervix in a 9-year-old girl.

    We present the first reported case of endometroid adenocarcinoma of the uterine cervix in a young girl. The differential diagnosis of a vaginal mass in this age group is usually rhabdomyosarcoma, although other, rarer tumours also occur.
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ranking = 1
keywords = sarcoma
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12/863. Papillary clear cell adenocarcinoma of the groin arising from endometriosis.

    A 67-year-old woman presented with rapidly enlarging right anterior thigh mass. Clinical impression was of a primary sarcoma, but the histologic analysis of an incisional biopsy specimen showed adenocarcinoma with clear cell differentiation. Initially thought to be a metastasis, the malignant tumor appears to have arisen from extraabdominal endometriosis of the right groin. This case shows clinical, radiographic, and histologic findings that may help the orthopaedic surgeon recognize an unusual complication of extrapelvic endometriosis.
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ranking = 1
keywords = sarcoma
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13/863. Transformation of ameloblastic fibroma to fibrosarcoma.

    The direct transformation of an ameloblastic fibroma into a fibrosarcoma in a 16-year-old Caucasian male is reported. Although no ameloblastic epithelium was found in the recurrent tumor, the odontogenic origin of the fibrosarcoma was evident. The ameloblastic fibrosarcoma and the fibrosarcoma of identical odontogenic origin represent an entity which should be distinguished from conventional fibrosarcoma as these tumors demonstrate different clinical behaviors.
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ranking = 9
keywords = sarcoma
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14/863. Ewing's sarcoma of the soft tissues? Case report.

    A case is reported of a malignant tumour of the soft tissues of the leg, with histological and pathological features comparable with those of Ewing's sarcoma of bone. This extension of the term Ewing's sarcoma to the soft tissues is proposed and the differential diagnosis is discussed.
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ranking = 6
keywords = sarcoma
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15/863. A rare chimeric TLS/FUS-CHOP transcript in a patient with multiple liposarcomas: a case report.

    Myxoid liposarcomas harbor a unique and specific t(12;16)(q13,p11) chromosomal translocation. The breakpoint has recently been identified, and involvement of the TLS/FUS gene on chromosome 16 and the CHOP gene on chromosome 12 was demonstrated. We report a case of a 45-year-old woman who developed multiple malignant lipomatous tumors of unknown origin and myxoid/round cell histology at different locations. To examine the diagnostic potential of this translocation and to develop a hypothesis on the origin of the tumors, we used cytogenetic and molecular cytogenetic methods (reverse transcription polymerase chain reaction, RT-PCR). We identified a chimeric rna transcript in the second recurrence in the thigh/groin, as well as in another tumor in the mediastinum, which has an additional sequence of 33 bp, known as fusion transcript type III. cytogenetic analysis of another tumor in retroperitoneal space revealed a rare type of unbalanced translocation der(16)t(12;16). We hypothesize that these tumors are metastases rather than multicentric tumors. The detection of the chimeric message in the present case is not only useful for differential diagnosis, but also for analyzing the origin of multiple neoplasms.
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ranking = 5
keywords = sarcoma
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16/863. Sarcoma botryoides of the cervix. Report of a case with cytopathologic findings.

    BACKGROUND: Cytologic findings of sarcoma botryoides were still equivocal because sarcoma botryoides of the uterine cervix is an extremely rare neoplasm, and few cases have been reported to date. CASE: A 17-year-old female was diagnosed with sarcoma botryoides of the uterine cervix. The entire vaginal canal was occupied with polypoid masses, which arose from the anterior lip of the uterine cervix, and the tumor was classified as group I (Intergroup rhabdomyosarcoma Study). After wedge resection and six courses of combination chemotherapy, the tumor recurred in the same location of the cervix as the primary lesion. touch smear of the polypoid mass formed loose clusters and also showed short spindle cells in a necrotic background. The nucleus of the tumor cells had a thin nuclear membrane, fine chromatin pattern and partly clear nucleolus, showing mild nuclear atypia. Immunohistochemically, some of the tumor cells showed positive staining for myoglobin and desmin. CONCLUSION: The cytologic findings of sarcoma botryoides of the female genital tract are typical features of nonepithelial malignant tumor. Immunohistochemical study is useful for the diagnosis of rhabdomyosarcoma.
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ranking = 6
keywords = sarcoma
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17/863. Recurrent chondrosarcoma of the cranial base: a durable response to ifosfamide-doxorubicin chemotherapy.

    The case of a 46-year old woman with recurrent chondrosarcoma of the cranial base, refractory to neurosurgical intervention and external radiotherapy is reported. She received five cycles of systemic chemotherapy utilizing ifosfamide and doxorubicin which resulted in a durable clinical and radiographic response lasting 52 months. A review of the management options for recurrent chondrosarcoma of the cranial base is also presented.
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ranking = 6
keywords = sarcoma
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18/863. Recurrent primary well-differentiated intrascrotal liposarcoma: case report and review of the literature.

    lipoma-like liposarcomas of the scrotal wall are very rarely reported neoplasms in the surgical and histopathological literature. We treated a well-differentiated liposarcoma of the inside wall of the scrotum in a 62-year-old man. Following local excision, the tumor recurred after three months, and a funiculoorchidectomy was performed. Today, 24 months following secondary surgery, the patient is completely asymptomatic and there is no evidence of tumor recurrence either on physical examination, ultrasonography or abdominal and pelvic computed tomography. In this paper we present the case and a review of the relevant literature.
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ranking = 6
keywords = sarcoma
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19/863. meningioma with sarcomatous change and hepatic metastasis.

    A 72-year-old patient had a meningotheliomatous meningioma that invaded through the skull and into temporalis muscle. One year following craniotomy for removal of the neoplasm, he developed headaches, diplopia, and proptosis of the left eye. biopsy of the orbital contents revealed a malignant supporting tissue neoplasm having a resemblance to the previous meningioma. No curative therapy was possible and the patient died 33 months after diagnosis. autopsy examination showed extensive residual intracranial neoplasm and a 3-cm metastasis in the liver. The metastatic tumor appeared similar to the meningioma and did not appear malignant histologically. The case illustrates the distinct histologic variations in meningiomas and the difficulties in predicting their biologic activity. Aggressive local behavior may indicate possible malignant areas in the neoplasm. Therefore, examination of the neoplasm should be thorough. Such a correlation may suggest malignant biologic potential.
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ranking = 4
keywords = sarcoma
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20/863. liposarcoma of the hypopharynx. A case report and review of the literature.

    A new case of well differentiated hypopharyngeal liposarcoma is reported. The author reviews the literature about the clinical and histologic features of these tumors. From the 93 head and neck liposarcomas reported 13 are located in the hypopharynx. The mean age of presentation is 61 years and males are largely predominant. Etiology is still unknown. Tumor size does not seem to affect the prognosis. Usually patients do not present with cervical lymph node metastasis nor distant metastasis. Histologic diagnosis according to Enzinger and Weis's classification could be difficult especially to distinguish between lipoma and well differentiated liposarcoma. The main prognostic factor is histologic grade but early recognition combined with a complete surgical excision can result in a decreased local recurrence rate and high survival rate. Low grade tumors often recur locally but distant metastases are rare. From the 8 well differentiated tumors reviewed 6 presented a local recurrence 2 months to 20 years after surgery but only 1 patient died without disease. High grade tumors are much more aggressive locally and metastasize frequently. radiotherapy and chemotherapy are proposed in selected cases without evidence to be of value.
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ranking = 7
keywords = sarcoma
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