Bone Neoplasms ; pathology ; Humans ; Sarcoma, Ewing ; pathology

Humans ; Sarcoma, Ewing/pathology* ; Pancreas/pathology*

Adolescent ; Child ; Humans ; Male ; Neuroectodermal Tumors, Primitive, Peripheral ; pathology ; Sarcoma, Ewing ; pathology

OBJECTIVES: This study investigate the clinical and imaging features of Ewing sarcoma (ES) of the jaw. METHODS: Eight cases of pathologically diagnosed ES of the jaw from January 2010 to June 2022 were included in the study. Clinical and radiological features were retrospectively analyzed. RESULTS: Among the eight cases, the mean age at onset was 29.4 years, and the male to female ratio was 7∶1. The predilecting site was the posterior part of mandible, accounting for 75% of the cases. The lesions often exhibited early numbness of the lower lip and lymphadenopathy. The main radiographic manifestation of mandibular lesions was ill-defined radiolucency, mixed with fibrous or brush-like tumor matrix, and soft tissue mass. The maxillary ES lesions mainly presented as lytic bone destruction accompanied by adjacent soft tissue mass. Periosteal ossification was rarely seen. CONCLUSIONS The clinical and imaging characteristics of ES in the jaw are helpful for its diagnosis.
Male ; Humans ; Female ; Sarcoma, Ewing/pathology* ; Retrospective Studies ; Radiography ; Mandible/pathology* ; Lip ; Bone Neoplasms

OBJECTIVE: To systematically evaluate the image and pathological features of Ewing's sarcoma (ES) in the oral and maxillofacial region.
 METHODS: Eight patients with ES in the oral and maxillofacial region were enrolled for this study. The X-ray, computed tomography (CT), and magnetic resonance imaging (MRI) of ES and the pathological data were systematically evaluated.
 RESULTS: X-ray image showed a diffuse radiolucency with cystic component and ill-defined borders for bone lesion. CT showed that there was osteolytic mass with extensive bone destruction and soft tissue infiltration, but no periosteal reactions were observed. MRI demonstrated that ES showed an inhomogeneous structure and blurred borders with invasion to adjacent soft tissue for bone lesion. Similar manifestation also showed in MRI images for patients with soft tissues. Histologically, ES composed of small round cells, and expressed CD99, neuron specific enolase (NSE) and vimentin (Vim) in all patients. Desmin (Des), CD34, epithelial membrane antigen (EMA), chromogranin A (ChgA), etc, were negatively expressed in ES cells.
 CONCLUSION X-ray, CT, and MRI are helpful to determine the property, extent and the relationship of ES with the surrounding tissues. Immunohistochemical stain of CD99, NSE, and Vim are helpful to confirm the pathological diagnosis of ES.
Humans ; Magnetic Resonance Imaging ; Mouth ; Pathology, Oral ; Phosphopyruvate Hydratase ; Sarcoma, Ewing ; Tomography, X-Ray Computed

The anthors studied the 152 cases of primary bone tumors statistically during the period of 7 years and 4 months from Janusry, 1980 to April, 1987 at the department of orthopaedic surgery, St. Benedict Hospital, Pusan and the department of anatomic pathology, Pusan National University Hospital. The results of the study were summsrized as follows; l. Of the 152 cases of primary bone tumors, benign tumors were 128 cases(84.2%) and malignant tumors were 24 cases(15.8%). 2. Of benign bone tumors, the most common type was osteochondroms(34 cases, 26.6%), followed by fibrous dysplasia(25 cases, 19.5%), giant cell tumor(14 cases, 10.9%) and enchondroma(11 cases, 8.6%). 3. Of malignant bone tumors, the most common type was osteosarcoma(14 cases, 58.3%), followed by chondrosarcoma(5 cases, 20.8%), Ewing's sarcoma(3 cases, 12.5%) and myeloma(1 case, 4.2%). 4. Age distribution of benign bone tumors showed that most cases(76.4%) occured under 30-years old. Among malignant bone tumors, most of osteosarcoma and Ewing's sarcoma occured between 10-and 20-yesrs old. 5. The male to female ratio of overall benign bone tumors was 1.1: 1, and that of maligant bone tumors was 1.2: 1. There was no sexual difference. 6. The favorite sites of benign bone tumors were femur(31 cases, 23.1%), maxilla or mandible(31 cases, 23.1%), tibia(22 cases, 16.4%) and rib(11 cases, 8.2%) and those of malignant bone tumors were freguently femur(12 cases, 50.0%), followed by tibia(5 cases, 20.8 %) and pelvis(4 cases, 16.7%). 7. The most frequent manifestations in benign bone tumors were mass or swelling(62.7%), followed by pain or tenderness(33.9%) and disturbed motion or function(10.2%), but those were mostly pain or tenderness(73.9%), followed by mass or swelling(52.2%) and pathologic fracture(13.0%) in malignsnt bone tumors.8. The duration of symptoms in benign bone tumors was less than 6 months in 39.1% and less than 1 year in 44.6%, but less than 6 months in 70.9% and less than 1 year in 87.6% in malignant bone tumors. The duration of symptoms in malignant bone tumors was much shorted than that of benign bone tumors.
Age Distribution ; Busan ; Female ; Giant Cells ; Humans ; Male ; Maxilla ; Osteosarcoma ; Pathology ; Sarcoma, Ewing ; Statistics as Topic

Pediatric solid tumors have many similarity among different tumors. These tumors present small round cell types, and cause frequent diagnostic problems in pediatric pathology. An important advance in the investigation of these small round cell tumors has been the identification of consistent chromosomal translocations associated with several types of tumor. Eighteen patients with soft tissue sarcoma were available for review. Seventeen cell lines were also included in this study. The RNA from the specimens were analyzed by reverse transcriptase-polymerase chain reaction (RT-PCR). PAX3-FKHR fusion was present in four of five alveolar rhabdomyosarcoma and PAX7-FKHR fusion was detected in one of five alveolar rhabdomyosarcoma. None of the specimens expressed more than one chimeric transcript. EWS-FLI1 or EWS-ERG fusions were detected in all seven Ewings' sarcoma. No specimens showed EWS-WT1 fusion. These results corresponded well to the histopathologic diagnosis. There were no differences in the histologic appearances of tumors with the more frequent PAX3-FKHR or EWS-FLI1 fusions compared with those containing the variant PAX7-FKHR or EWS-ERG fusions. RT-PCR assay for chimeric transcript is an useful tool for a rapid and objective diagnosis of pediatric solid tumors. Through these tools, we can approach genetically to the differential diagnosis of undifferentiated small round tumors.
Cell Line ; Diagnosis* ; Diagnosis, Differential ; Humans ; Lymphoma ; Pathology ; Rhabdomyosarcoma ; Rhabdomyosarcoma, Alveolar ; RNA ; Sarcoma ; Sarcoma, Ewing ; Translocation, Genetic ; Wilms Tumor

Ewing's sarcoma in the cervix is characterized by extremely rare occurrence,high degree of malignancy,and rapid progression.The diagnosis of this disease is based on pathology and immunohistochemistry. The main image of the case reported in this paper showed the cervical cyst with solid mass,large volume,and uneven density and signal,and the solid part can be strengthened in enhanced scanning.Because of the rapid growth,the lesion is prone to liquefaction necrosis and bleeding.Since the metastasis occurs early,timely diagnosis is essential.
Cervix Uteri/pathology* ; Female ; Humans ; Immunohistochemistry ; Neuroectodermal Tumors, Primitive, Peripheral/pathology* ; Sarcoma, Ewing/pathology* ; Uterine Cervical Neoplasms

Ameloblastoma ; pathology ; Bone Neoplasms ; classification ; genetics ; pathology ; Chondromatosis ; pathology ; Chondrosarcoma ; classification ; pathology ; Enchondromatosis ; pathology ; Humans ; Osteosarcoma ; classification ; pathology ; Sarcoma, Ewing ; pathology ; Societies, Medical ; United States ; World Health Organization

A case of abdominal Burkitt's lymphoma diagnosed through aspiration cytology is described. This 9-year-old boy presented with abdominal pain and distention for three months accompanied by fever and night sweat during the last month. An abdominal sonography and CT scan showed hepatosplenomegaly and an intrahepatic mass with celiac lymph node enlargement, ascites, and pleural fluid. A peripheral blood smear showed a few blast cells. Aspiration of the abdominal mass revealed very cellular aspirates consisting of diffusely scattered small monotonous round cells. The cells had little cytoplasm, along with round nuclei that showed clear-cut nuclear membrane, coarse chromatin pattern, and multiple small prominent nucleoli. Differential diagnoses considered were small round cell sarcomas such as malignant lymphoma, neuroblastoma, Ewing's sarcoma, and rhabdomyosarcoma. Of these, malignant lymphoma of the small noncleaved cell type was most consistent with the results of several studies including immunohistochemical staining, peripheral blood smear, and bone marrow biopsy. The cells were positive for leukocyte common antigen (LCA) and showed finely vacuolated basophilic cytoplasm in both the peripheral blood smear and bone marrow biopsy, characteristic of Burkitt's lymphoma cells.
Biopsy, Needle ; Burkitt Lymphoma/*diagnosis/pathology/radionuclide imaging ; Child ; Diagnosis, Differential ; Humans ; Male ; Neuroblastoma/*diagnosis/pathology ; Rhabdomyosarcoma/*diagnosis/pathology ; Sarcoma, Ewing/*diagnosis/pathology ; Tomography, X-Ray Computed