Search Results for osteoid

AORTIC INTIMAL SARCOMA: OSSEOUS DIFFERENTIATION Figure 55-13 AORTIC INTIMAL SARCOMA: OSSEOUS DIFFERENTIATION In this example, there are large areas of bland osteoid formation (left), interposed with areas of malignant spindle cells producing osteoid (right). More about this image found in AORTIC INTIMAL SARCOMA: OSSEOUS DIFFERENTIATION In this example, there are...

PULMONARY ARTERY INTIMAL SARCOMA: OSTEOCARTILAGENOUS DIFFERENTIATION Figure 55-7 PULMONARY ARTERY INTIMAL SARCOMA: OSTEOCARTILAGENOUS DIFFERENTIATION Left: This example exhibits cartilaginous differentiation, producing a chondroid matrix. Right: Areas of osteoid production and osseous More about this image found in PULMONARY ARTERY INTIMAL SARCOMA: OSTEOCARTILAGENOUS DIFFERENTIATION Left:...

ENDOMETRIOID ADENOCARCINOMA Figure 7-20 ENDOMETRIOID ADENOCARCINOMA There is stromal hyalinization (left) and benign-appearing osteoid (right). More about this image found in ENDOMETRIOID ADENOCARCINOMA There is stromal hyalinization (left) and beni...

BIPHASIC MESOTHELIOMA Figure 3-67 BIPHASIC MESOTHELIOMA A: Nodules of osteoid-like matrix are present in this biphasic mesothelioma. B: Higher-power view shows a biphasic malignancy with a nodule of osteoid. Foreign body giant cells with talc are also present in this patient who had prior talc More about this image found in BIPHASIC MESOTHELIOMA A: Nodules of osteoid-like matrix are present in thi...

SARCOMATOID MESOTHELIOMA WITH HETEROLOGOUS ELEMENTS Figure 3-61 SARCOMATOID MESOTHELIOMA WITH HETEROLOGOUS ELEMENTS A: A focus of osteosarcoma-like tumor is present. B: There is a focus of osteoid-like matrix. C: More mature bone formation is present. More about this image found in SARCOMATOID MESOTHELIOMA WITH HETEROLOGOUS ELEMENTS A: A focus of osteosar...

OSTEOID OSTEOMA Figure 4-24 OSTEOID OSTEOMA Top: Serial cross section of osteoid osteoma located in the cortex of the tibia. The tumor is round and red, with a white-tan center. The normal cortex is apparent (white arrows) and is surrounded by a thick layer of periosteal bone. Bottom: Resected More about this image found in OSTEOID OSTEOMA Top: Serial cross section of osteoid osteoma located in th...

OSTEOID OSTEOMA Figure 4-29 OSTEOID OSTEOMA Infrequently, osteoid osteoma has cartilage as a portion of the matrix. More about this image found in OSTEOID OSTEOMA Infrequently, osteoid osteoma has cartilage as a portion o...

CLEAR CELL SARCOMA OF THE KIDNEY Figure 1-89 CLEAR CELL SARCOMA OF THE KIDNEY The hyaline sclerotic pattern simulates osteoid, and can result in a misdiagnosis of osteosarcoma. More about this image found in CLEAR CELL SARCOMA OF THE KIDNEY The hyaline sclerotic pattern simulates o...

RHABDOID TUMOR Figure 1-105 RHABDOID TUMOR This sclerosing neoplasm demonstrates dense stromal collagen resembling osteoid (left) separating nests of neoplastic cells that surround renal tubules (right). More about this image found in RHABDOID TUMOR This sclerosing neoplasm demonstrates dense stromal collage...

SURFACE OR CORTICAL LESIONS OF BONE Figure 3-8 SURFACE OR CORTICAL LESIONS OF BONE Arrows point to osteoid osteoma (A). Arrows indicate nonossifying fibroma (B), osteochondroma (C), periosteal chondroma (D), and parosteal osteosarcoma (E). More about this image found in SURFACE OR CORTICAL LESIONS OF BONE Arrows point to osteoid osteoma (A). A...

OSTEOID OSTEOMA Figure 4-19 OSTEOID OSTEOMA A: Radiograph of elbow shows osteopenia of the elbow joint and a small round mineralized lesion in the lateral humeral epicondyle. B: Axial CT shows a round, mixed lytic and sclerotic mass in the lateral epicondyle. C: Axial fat-suppressed T2 More about this image found in OSTEOID OSTEOMA A: Radiograph of elbow shows osteopenia of the elbow joint...

OSTEOID OSTEOMA Figure 4-20 OSTEOID OSTEOMA Left: Frontal radiograph of the spine showing levoconvex scoliosis caused by muscle spasm induced by painful osteoid osteoma. Above: Reformatted sagittal CT image shows a well-defined, round sclerotic lesion in the pedicle and lamina (arrow). More about this image found in OSTEOID OSTEOMA Left: Frontal radiograph of the spine showing levoconvex s...

OSTEOID OSTEOMA Figure 4-21 OSTEOID OSTEOMA Left: Frontal radiograph of the leg shows an oval, lytic, sharply demarcated, metadiaphyseal subperiosteal tumor in a child (arrows). The tumor is surrounded by well-formed homogeneous subperiosteal reactive bone (arrowheads). Above: Axial CT image More about this image found in OSTEOID OSTEOMA Left: Frontal radiograph of the leg shows an oval, lytic, ...