Neuroradiology
Cemento-ossifying Fibroma Of Paranasal Sinus Presenting Acutely As Orbital Cellulitis by Maneesh Khanna et al. |
Published: 2009 Apr Issue: 3(4) :: Pages: 18-25
| Abstract: Fibro-osseous lesions of the face and paranasal sinuses are relatively uncommon. These lesions have overlapping clinical, radiologic and pathologic features causing difficulty in diagnosis. Neoplastic fibro-osseous paranasal sinus lesions can be benign or malignant. The benign fibro-osseous lesions described are: ossifying fibroma (and its histologic variants) and fibrous dysplasia. The variants of ossifying fibroma differ in the nature of calcified material (i.e. cementum versus bone), in the location of the lesion (oral versus paranasal sinus or orbital), other morphologic variations (presence of psammomatoid concretions) and biologic behavior (aggressive versus stable). Presence of cementum or bone classifies the lesion as cementifying fibroma or ossifying fibroma respectively while lesions with mixture of both cementum and bone are called cemento-ossifying fibroma. We describe a case of a young adult male with cemento-ossifying fibroma of paranasal sinus presenting acutely as left orbital cellulitis with proptosis.
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Thoracic Radiology
Metastatic Pulmonary Calcification in a Patient with Chronic Renal Failure by Ozlem Alkan et al. |
Published: 2009 Apr Issue: 3(4) :: Pages: 14-17
| Abstract: Metastatic pulmonary calcification characterized by diffuse calcium deposition in the lungs is known to occur in patients with chronic renal failure. We present a case of a 47-year-old man with chronic renal failure presented with dyspnea, high-resolution computed tomography of the chest revealed multiple, centrilobular, calcified nodules and patchy areas of ground-glass opacity throughout both lungs, consistent with metastatic pulmonary calcification. Calcification was also seen in the bronchi and trachea.
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Nuclear Medicine / Molecular Imaging
Detection of neoplastic meningitis in a patient with gastric cancer by thallium-201 SPECT by Yasuyo Tonomura et al. |
Published: 2009 Apr Issue: 3(4) :: Pages: 9-13
| Abstract: We describe the usefulness of thallium-201 SPECT in a patient with neoplastic meningitis (NM) from gastric carcinoma. Thallium-201 SPECT is of value for the diagnosis of cancer; retention of thallium-201 on delayed images strongly suggests malignancy. NM is a lethal, major neurologic complication of cancer. The standard for the diagnosis of NM is cytologic confirmation of malignant cells in CSF, but cytologic results are often negative (estimated false negative rate, 50%), even when NM is strongly suspected clinically. In patients with equivocal findings, our findings suggest that thallium-201 SPECT is one helpful tool for the detection of NM, particularly when associated with signet-ring cell carcinoma.
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Pediatric Radiology
Osteoid osteoma of the femur: masquerading the tethered cord syndrome by Amit Agrawal et al. |
Published: 2009 Apr Issue: 3(4) :: Pages: 5-8
| Abstract: We present an illustrative case of osteoid osteoma of the femur, in an 11 year old male child where the clinical features were masquerading the diagnosis of tethered cord syndrome and lead to the delay in diagnosis.
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OB/GYN
Postpartum pneumoperitoneum and peritonitis after water birth by Vanessa Brown et al. |
Published: 2009 Apr Issue: 3(4) :: Pages: 1-4
| Abstract: Pneumoperitoneum (the presence of free gas in the peritoneal cavity) usually indicates gastrointestinal perforation with associated peritoneal contamination. We describe the unusual case of a 28-year-old female, who was 7 days postpartum and presented with features of peritonitis that were initially missed despite supporting radiological evidence. The causes of pneumoperitoneum are discussed. In the postpartum period the female genital tract provides an alternative route by which gas can enter the abdominal cavity and cause pneumoperitoneum. In the postpartum period it is important to remember that the clinical signs of peritonism, guarding and rebound tenderness may be diminished or subtle due to abdominal wall laxity.
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