Biomaterial Database

Soft-tissue osteosarcoma with prominent aneurysmatic bone cyst-like features: a case report. 2001

J B Laforga, and A Jover, and P Martínez

Department of Pathology, Hospital Marina Alta, Denia, Spain. jblaforga@redestb.es

We describe the cytological features of a soft-tissue high-grade spindle and pleomorphic sarcoma. The smears showed hypercellularity composed of pleomorphic round and elongated cells, and a striking population of multinucleated osteoclast-type giant cells. Microscopically the tumor showed multiple patterns such as highly cellular pleomorphic, less cellular, and hyalinized areas with neoplastic cartilage and osteoid, and areas with hemorrhage and multicystic appearance with numerous osteoclastic giant cells, resembling aneurysmal bone cysts. Immunohistochemical studies showed positivity for vimentin, while chondroid tissue was positive for S-100, and osteoclastic giant cells stained positively for CD68. Due to the varied microscopic patterns, the differential diagnosis included many tumors containing osteoclastic giant cells and osteochondroid tissue.

UI	MeSH Term	Description	Entries
D007150	Immunohistochemistry	Histochemical localization of immunoreactive substances using labeled antibodies as reagents.	Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007717	Knee	A region of the lower extremity immediately surrounding and including the KNEE JOINT.
D001859	Bone Neoplasms	Tumors or cancer located in bone tissue or specific BONES.	Bone Cancer,Cancer of Bone,Cancer of the Bone,Neoplasms, Bone,Bone Neoplasm,Neoplasm, Bone
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368	Aged	A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.	Elderly
D012516	Osteosarcoma	A sarcoma originating in bone-forming cells, affecting the ends of long bones. It is the most common and most malignant of sarcomas of the bones, and occurs chiefly among 10- to 25-year-old youths. (From Stedman, 25th ed)	Sarcoma, Osteogenic,Osteogenic Sarcoma,Osteosarcoma Tumor,Osteogenic Sarcomas,Osteosarcoma Tumors,Osteosarcomas,Sarcomas, Osteogenic,Tumor, Osteosarcoma,Tumors, Osteosarcoma
D012983	Soft Tissue Neoplasms	Neoplasms of whatever cell type or origin, occurring in the extraskeletal connective tissue framework of the body including the organs of locomotion and their various component structures, such as nerves, blood vessels, lymphatics, etc.	Neoplasm, Soft Tissue,Neoplasms, Soft Tissue,Soft Tissue Neoplasm
D017824	Bone Cysts, Aneurysmal	Fibrous blood-filled cyst in the bone. Although benign it can be destructive causing deformity and fractures.	Aneurysmal Bone Cysts,Bone Cyst, Aneurysmal,Cyst, Aneurysmal Bone,Cysts, Aneurysmal Bone

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