BACKGROUND: @entity11262 ( @entity11262 ) is an infrequent @entity5 , representing approximately 1% of all @entity511 . Cytologic descriptions of MCs have been confined to rare case reports. In the current report, the authors describe their experience with the cytologic features of four MCs: two primary @entity5 and two metastatic lesions. METHODS: Four @entity1 were diagnosed with @entity11262 at the authors' institution from 1994 to 2002. Three of four @entity1 underwent fine-needle aspiration (FNA) biopsy as part of their diagnosis; in the fourth @entity1 , imprint cytology was performed. Each @entity5 also received histologic confirmation. RESULTS: The @entity1 studied included three females and one male. In three @entity1 , the @entity5 presented initially as a soft tissue mass; whereas, in the remaining @entity1 , the @entity11262 presented in the tibia. FNA results demonstrated small, oval-to-spindled cells with high nuclear-to-cytoplasmic ratios. Cells occurred singly and in clumps in a background of basophilic extracellular matrix. Histologic examination of each lesion demonstrated @entity5 , including focal areas of relatively mature cartilage formation as well as a small cell population. CONCLUSIONS: @entity11262 is a @entity8650 that occurs frequently in extraskeletal locations. FNA of these @entity5 can be diagnostic if the @entity5 is sampled appropriately and of critical features, such as the background extracellular matrix, are recognized. Given the propensity of these @entity5 to metastasize and the poor prognosis of @entity1 with @entity11262 , early identification by FNA biopsy may allow earlier, more aggressive interventions.

Cytopathology of XXXX : a report and comparison of four @entity1 .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity511 :: ('MESH:D002813', 'Disease') :: ['chondrosarcomas'] @entity8650 :: ('MESH:D012983', 'Disease') :: ['rare soft tissue tumor'] @entity11262 :: ('MESH:D018211', 'Disease') :: ['Mesenchymal chondrosarcoma', 'MC'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'biphasic tumors', 'neoplasm', 'tumors']
@entity11262 :: (MESH:D018211,Disease) :: ['mesenchymal chondrosarcomas']
