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January 2012 Issue

 




Other Radiology articles from the Technical/IT & Innovative section Technical/IT & Innovative

3-D printout of a DICOM file to aid surgical planning in a 6 year old patient with a large scapular osteochondroma complicating congenital diaphyseal aclasia by Matthew D Tam et al.

Published: 2012 Jan
Issue: 6(1) :: Pages: 31-37


Free full text article: 3-D printout of a DICOM file to aid surgical planning in a 6 year old patient with a large scapular osteochondroma complicating congenital diaphyseal aclasia

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Abstract: A 6 year old girl presented with a large osteochondroma arising from the scapula. Radiographs, CT and MRI were performed to assess the lesion and to determine whether the lesion could be safely resected. A model of the scapula was created by post-processing the DICOM file and using a 3-D printer. The CT images were segmented and the images were then manually edited using a graphics tablet, and then an STL-file was generated and a 3-D plaster model printed. The model allowed better anatomical understanding of the lesion and helped plan surgical management.


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Conventional Radiography, Magnetic Resonance Imaging, Computed Tomography, Other, Table

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Other Radiology articles from the Musculoskeletal Imaging section Musculoskeletal Imaging

Primary Dedifferentiated Liposarcoma of the Axilla Arising in a Mixed, Well-differentiated and Myxoid Liposarcoma by Garth S. Campbell et al.

Published: 2012 Jan
Issue: 6(1) :: Pages: 9-16


Free full text article: Primary Dedifferentiated Liposarcoma of the Axilla Arising in a Mixed, Well-differentiated and Myxoid Liposarcoma

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Abstract: We describe a case of mixed liposarcoma of the axilla presenting as a high grade undifferentiated sarcoma with areas of well-differentiated and myxoid liposarcoma. MRI demonstrated a lobulated, septated intermuscular mass with marked heterogeneous gadolinium enhancement. A small focus of the tumor demonstrated fat suppressed signal more characteristic of well-differentiated liposarcoma. Pathologic analysis following wide local excision revealed a large, high grade sarcomatous component with highly pleomorphic cells with a thin rim of well-differentiated and myxoid liposarcoma on histologic examination. Dedifferentiated liposarcomas arising outside of the retroperitoneum are very rare, as are dedifferentiated liposarcomas arising from a histologically mixed liposarcoma. In this regard, this case illustrates an unusual combination of tumor location and histology which, to our knowledge, has not previously been reported.


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Magnetic Resonance Imaging, Nuclear Medicine, Computed Tomography, Microscopic pathology, Macroscopic pathology, Table

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Other Radiology articles from the Pediatric Radiology section Pediatric Radiology

A case of Rosai-Dorfman Disease in a pediatric patient with cardiac involvement by Leonard Yontz et al.

Published: 2012 Jan
Issue: 6(1) :: Pages: 1-8


Free full text article: A case of Rosai-Dorfman Disease in a pediatric patient with cardiac involvement

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Abstract: Rosai-Dorfman disease (RDD) involves abnormal proliferations of oddly behaving histocytes that are not derived from the Langerhan`s Cell linage. These collections tend to occur within lymph nodes, with occasional extra nodal presentation. While RDD is a rare entity itself, extra nodal cases are even more so, with even fewer reporting cardiac involvement, and previously only in adults. This report describes the disease in a pediatric patient who had the unique feature of an extra nodal cardiac mass. The patient, who was known to have sickle cell disease, was initially erroneously thought to have acute chest syndrome. Sudden changes in the patient`s status, including development of 3rd degree heart block, demanded investigation with additional imaging. Chest CT revealed a mass arising from the cardiac interatrial septum and encircling the entire thoracic aorta. Imaging features of Rosai-Dorfman disease are nonspecific, complicating the diagnosis. We present this case with discussion of this extremely uncommon entity. We describe the diagnostic methods, the differential diagnosis, and the treatment options.


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Conventional Radiography, Computed Tomography, Microscopic pathology, Nuclear Medicine, Table

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Other Radiology articles from the Gastrointestinal Radiology section Gastrointestinal Radiology

Rare pancreatic neoplasm: MDCT and MRI features of a typical Solid Pseudopapillary Tumor by Stefano Palmucci et al.

Published: 2012 Jan
Issue: 6(1) :: Pages: 17-24


Free full text article: Rare pancreatic neoplasm: MDCT and MRI features of a typical Solid Pseudopapillary Tumor

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Abstract: Solid pseudopapillary tumor of the pancreas is a rare neoplasm, predominantly observed in young women and with greatest incidence in the second and third decade. It has clinically good behavior, although large at the time of diagnosis. We report the case of a thirty-year-old woman with a giant mass in the pancreas, incidentally discovered during an abdominal ultrasonography. The mass was later investigated by multidetector computed tomography and magnetic resonance imaging. The cystic-solid appearance of the encapsulated lesion suggested to radiologists the possibility of a solid pseudopapillary tumor. Imaging features of this pancreatic neoplasm and differential diagnosis from other cystic pancreatic tumors are discussed in our report, in order to help radiologists and clinicians achieve correct diagnosis and management.


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Ultrasound, Computed Tomography, Magnetic Resonance Imaging, Microscopic pathology, Table

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Other Radiology articles from the Thoracic Radiology section Thoracic Radiology

Thoracic endometriosis: a case report by Priyank S Chatra

Published: 2012 Jan
Issue: 6(1) :: Pages: 25-30


Free full text article: Thoracic endometriosis: a case report

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Abstract: Thoracic endometriosis is a rare form of extrapelvic endometriosis. These patients typically present with catamenial pneumothorax or hemoptysis. Adequate clinical history coupled with HRCT helps in early diagnosis and appropriate management of thoracic endometriosis.


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Ultrasound, Computed Tomography, Table

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