Andrew G. Huvos

Primary mucosal melanoma of the head and neck: a proposal for microstaging localized, Stage I (lymph node-negative) tumors.

The current study was conducted to identify histologic predictors of survival in patients with localized, lymph node‐negative (Stage I, N0M0) primary mucosal melanomas of the head and neck (HNMM).

Skeletal and extraskeletal myxoid chondrosarcoma: a comparative clinicopathologic, ultrastructural, and molecular study.

Skeletal myxoid chondrosarcoma (SMC) is considered to be either a typical chondrosarcoma with prominent myxoid alterations or an altogether unique malignant cartilage tumor. Extraskeletal myxoid chondrosarcoma (EMC) is a relatively rare but well‐recognized neoplasm. It was initially thought to be a low grade sarcoma of cartilage derivation and was recently found, in most cases, to contain a reciprocal t(9;22), resulting in a fusion of the EWS and CHN genes. Are SMC and EMC the same entity arising in two different locations, or are they two separate entities? To the authors knowledge, this study represents the first systematic attempt to answer this question.

Prognostic Impact of P53 Status in Ewing Sarcoma

Disease stage at the time of diagnosis and response to therapy are the main prognostic factors for patients with Ewing sarcoma or peripheral neuroectodermal tumor (ES/PNET). The primary genetic alteration in ES/PNET, the fusion of the EWS gene with FLI1 or ERG, is diagnostically highly specific for these tumors, and molecular variation in the structure of the EWS‐FLI1 fusion gene also is of prognostic significance. In contrast, secondary genetic alterations, such as P53 alterations, are relatively uncommon in ES/PNET, and their prognostic impact has not been extensively studied.

Improved outcomes in patients with osteogenic sarcoma of the head and neck

The current study reviews the authors recent institutional experience in the treatment of osteosarcoma of the head and neck (OSHN).

Prognostic factors for patients with sarcomas of the pelvic bones

Treatment of malignant tumors of the pelvis represents one of the most difficult problems in musculoskeletal oncology. However, factors that influence the local and systemic control of the disease remain ill‐defined.

Prognostic impact of INK4A deletion in Ewing sarcoma.

The primary genetic alteration in > 95% of Ewing sarcomas (ES) is a specific fusion of EWS with FLI1 or ERG. Secondary genetic alterations possibly involved in progression of ES are not well understood. A recent study found loss of the negative cell cycle regulator gene INK4A in 8 of 27 ES samples (30%). To confirm these findings and evaluate their prognostic significance, the authors studied INK4A deletion in 41 ES samples from 39 patients.

Phase II study of ecteinascidin 743 in heavily pretreated patients with recurrent osteosarcoma

Recurrent osteosarcoma is a drug‐resistant disease with a dismal prognosis. The objective of this Phase II study was to evaluate the activity of ecteinascidin 743 (ET‐743) as a salvage therapy in these patients.

p53 and MDM2 alterations in osteosarcomas

Alterations of the p53 gene and of MDM2, a gene coding for a p53 binding protein, have been implicated in the pathogenesis of osteosarcoma (OS).

Immunohistochemical detection of bone morphogenetic proteins in bone and soft-tissue sarcomas

Background. Bone morphogenetic proteins (BMPs) are potent inducers of bone formation. Functional and immunohistochemical studies have identified BMPs in a subset of osteosarcomas. In the present study, the authors extend the analysis of BMP expression to other bone and soft tissue sarcomas.

Conservative surgery for giant cell tumors of the sacrum. The role of cryosurgery as a supplement to curettage and partial excision.

Background. Giant cell tumors (GCTs) of the sacrum are a difficult clinical problem. Wide excision (total sacrectomy) is associated with high morbidity and pelvic/spinal instability. Curettage with or without supplemental radiotherapy is associated with a high recurrence rate. In view of the proven effectiveness of cryosurgery as an adjunct to curettage for extremity GCT, cryosurgery was used for treatment of GCTs of the sacrum.