1/894. Meningeal chondrosarcomas, a review of 31 patients. We reviewed the literature to study the clinical features, the management and the outcome of meningeal chondrosarcomas. We included 31 patients in this review: 22 were mesenchymal and nine were non-mesenchymal. The mean age was 27 years and 64% arose from the cranial meninges. The treatment was mainly total surgical excision. Adjuvant therapy was given to 36% of patients. Spinal meningeal chondrosarcomas had a better prognosis (81% 1-year survival and 45% 3-year survival). There were no pathognomonic clinical or radiological features. We concluded that the best management of meningeal chondrosarcomas is total surgical excision whenever possible, followed by combined course of radiotherapy and chemotherapy as soon as possible. ( info) |
2/894. Intramuscular mixed tumour with clonal chromosomal changes. A case of an entirely intramuscular mixed tumour occurred in an 82-year-old man, who presented with a large mass in the region of the right triceps muscle. A lobulated tumour was seen, with plump, round epithelioid cells embedded in a chondromyxoid stroma. Immunohistochemical examination showed strong S100 protein and pancytokeratin positivity in most of the tumour cells. cytogenetic analysis revealed complex clonal chromosomal changes: 47, XY, i(2) (q10), -15, der(17) t(15; 17) (q11; p12), r. Differential diagnosis against extraskeletal myxoid chondrosarcoma (EMC) may be problematic, particularly in an incisional biopsy. Chromosomal analysis can be very helpful in solving this problem, since EMC shows a specific reciprocal chromosome translocation characterised as t (9;22) (q22-31) (q11-12). ( info) |
3/894. Bone tumors in the pelvis presenting growth during pregnancy. Among 56 cases of a giant cell tumor of bone (GCT) and 52 cases of chondrosarcoma (CSA) in our series, four patients were discovered to have a tumor in the pelvic bone that grew in size during pregnancy. These four rare cases are described here. They include three cases of a GCT in the sacrum and one case of a CSA in the innominate bone. The dextran-coated charcoal assay and immunohistochemical techniques demonstrated the independence of these tumors from hormonal regulation despite the growth stimulated during pregnancy. It was concluded that the delay in detection of these tumors in the pelvis was just related to the opportunity afforded for unexpected growth during pregnancy. Surgical management was difficult due to the delay in tumor detection. The initial complaints such as pain, discomfort, or numbness around the pelvis were misinterpreted as symptoms of pregnancy. It should be kept in mind that during pregnancy, any pain or numbness in the pelvic region could be the direct result of a tumor in the pelvic bone. ( info) |
| We report, for the first time, the cytogenetic and molecular genetic constitution of a human mesenchymoma. As in several other soft tissue sarcomas, supernumerary ring and rod-shaped marker chromosomes were observed next to an otherwise normal diploid karyotype. Comparative genomic in situ hybridization and whole chromosome painting experiments revealed that chromosome 1q21-q25 and 12q14-q15 sequences were amplified, and that these sequences resided on the supernumerary marker chromosomes. We assume that, in this malignant mesenchymoma, the observed chromosomal anomalies may be associated with its well differentiated liposarcomatous component. ( info) |
5/894. Neuro-ophthalmologic manifestations of Maffucci's syndrome and Ollier's disease. patients with Ollier's disease (multiple skeletal enchondromas) and Maffucci's syndrome (multiple enchondromas associated with subcutaneous hemangiomas) may develop skull base chondrosarcomas or low-grade astrocytomas as a delayed consequence of these disorders. We report three patients with Ollier's disease and Maffucci's syndrome who had diplopia as the initial manifestation of intracranial tumors. Since patients with Maffucci's syndrome and Ollier's disease are at risk for the delayed development of brain and systemic neoplasms, neuroophthalmologists must be aware of the need for long-term surveillance in patients affected by these conditions. ( info) |
6/894. Bizarre parosteal osteochondromatous proliferation in the anterior maxilla: report of a case. Bizarre parosteal osteochondromatous proliferations are a rare subgroup of the osteochondromatous lesions. They must be differentiated from reactive osteochondromatous proliferations, low grade parosteal osteogenic sarcoma, and chondrosarcoma. Their recognition is important from the point of view of management, which should be by simple excision. This article describes a case of bizarre parosteal osteochondromatous proliferation in a 2-year-old child; the lesion developed in the anterior maxilla, a previously unreported site. ( info) |
7/894. Intracranial myxoid chondrosarcoma with early intradural growth. Chondrosarcomas are extremely rare intracranial cartilaginous tumors of which the myxoid variant is the least reported in the literature. They develop extradurally and generally infiltrate the dura only in advanced stages or at recurrence. We describe the case of a 55-year-old woman with a posterior cranial fossa myxoid chondrosarcoma which had a primarily intradural extension. ( info) |
8/894. Malignant phyllodes tumor with chondrosarcomatous differentiation: report of a case with cytological presentation. Malignant phyllodes tumor is a rare breast tumor with neoplastic epithelial and stromal components. The stromal component may show homologous and heterologous sarcomatous elements, including chondrosarcomatous and osteosarcomatous differentiation. Because these tumors may present with an almost exclusively sarcomatous component, it is important for the pathologist to include this entity in the diagnostic considerations of fine-needle aspirations of breast neoplasms showing sarcomatous differentiation. Following surgical excision, careful examination of the gross specimen and thorough sampling of the specimen is recommended before rendering a definitive histologic diagnosis. We describe the cytologic and histologic findings in a case of malignant phyllodes tumor with sarcomatous overgrowth showing predominantly chondrosarcomatous differentiation. ( info) |
9/894. chondrosarcoma of larynx: a case successfully reconstructed after total cricoidectomy. A case of a 64-year-old male with low-grade chondrosarcoma of the left posterolateral lamina of the cricoid cartilage is reported, in which a total cricoidectomy and partial resection of the left thyroid cartilage were performed. The rest of the thyroid cartilage and the arytenoid mucosa were approximated with sutures to the first tracheal ring, and a silastic T-tube was placed through the tracheostoma as a stent. The postoperative course has been successful except for the existence of a tracheal stoma and slight hoarseness. There has been no evidence of laryngeal stenosis nor recurrence at about 9 years postoperatively. ( info) |
10/894. chondrosarcoma of the foot: imaging, surgical and pathological correlation of three new cases. The foot is an uncommon location for chondrosarcoma. The presentation, diagnosis, pathological findings, surgical treatment and follow-up of three patients with chondrosarcoma in this rare location are presented. Though nonspecific, MR imaging findings were of aid in the diagnosis and treatment planning of these patients. If the diagnosis of this tumor is rapidly made, a tumor excision instead of limb amputation may be sufficient treatment at surgery. ( info) |