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Parathyroid carcinoma is a rare cause of primary hyperparathyroidism. When this malignancy is diagnosed, often there are distant metastases (usually liver and/or bone). Brown tumor is a localized form of osteitis fibrosa cystica; classic manifestation in bone of excess parathyroid hormone and this is a bening pathology. We encountered an unusual case of parathyroid carcinoma with images that mimicked metastatic bone tumors, whose differential diagnosis with brown tumor may be complicated. Positron emission tomography/computed tomography (PET/CT) scan was requested for the evaluation of fluorodeoxyglucosa uptake of these lesions. PET/CT images showed multiple hypermetabolic images that mimicked multiple skeletal metastasis but brown tumors could not be dismissed.

Lymphangiomatosis is rare in both adults and children. We present an 11 year old boy with right chylothorax. The formation of chylothorax was a result of diffuse lymphangioma in the mediastinum spreading to the pleura. In addition, this patient suffered from cystic bone lesions. The child was finally diagnosed as having lymphangiomatosis based on pleural biopsy and bone lesions found on CTs and MRI. He was treated by pleurectomy and propranol as well as control of anemia and infection. For more info : http://scidoc.org/IJRDM-01-101.php