Patients with bone marrow failure syndromes are at risk for the development of clonal neoplasms, including paroxysmal nocturnal hemoglobinuria (PNH), myelodysplasia (MDS), and acute myelogenous leukemia (AML). Approximately 10% to 20% of those who survive acquired aplastic anemia will develop a clonal disease within the decade following their diagnosis. The relative risk of clonal neoplasms is ...

Electrolyte alterations and extra-renal disorders are quite frequent in patients undergoing haemodialysis or peritoneal dialysis. The native kidneys may be the site of important pathologies in patients undergoing dialysis, especially in the form of acquired renal cystic disease with frequent malignant transformation. Renal neoplasms represents an important complication of haemodialysis-associat...

Osseous hemangiomas of the calvaria account for about 0.2% of bone neoplasms. We report a case of an extensive intraosseous cavernous hemangioma in a 46-year-old woman. MR imaging showed a mass in the right frontal bone with intra- and extracranial extension and a dural tail sign after gadopentetate dimeglumine administration, mimicking a meningioma in which the dural tail sign was due to a dir...

The medical records, conventional radiographs, bone scans and pelvic CT scans obtained in 50 consecutive patients with malignant lesions involving the osseous pelvis were retrospectively reviewed. In 21 patients with primary bone tumors or with osseous involvement from adjacent pelvic neoplasms, CT provided additional information, in 17 patients (80%) which had direct bearing in the clinical ma...

myofibroma is an uncommon benign mesenchymal neoplasm. solitary myofibroma is common in soft tissues of head and neck, but rare in the jaw bones. only a few sporadic cases of solitary myofibroma of mandible have been described. the aim of the present study was to present a clinical case of a patient with a myofibroma in mandible bone and its management. differentiating this lesion from other be...

Plasma cell neoplasms of the head and neck region can be extramedullary plasmacytoma of the bone, solitary plasmacytoma of the bone, and local manifestations of multiple myeloma. A 70-year-old male patient was admitted to our hospital with diplopia of four-day history. Magnetic resonance imaging showed soft tissue in the sphenoid sinus. Endoscopic biopsy was taken from the sphenoid sinus, which...

Ewing's sarcoma (ES) is the second most common malignant bone tumor in children and young adults. ES also occurs as a primary soft tissue neoplasm without involvement of bone. We report the second case of extraosseous (EO) ES emerging from the omentum and a review of the relevant literature. EO ES should be included in the differential diagnosis of soft tissue neoplasms in the abdomen.

Fibrosarcomas (FS) of bone are a rare malignancy accounting for less than 5% of all primary malignant bone neoplasms. Diagnosis and treatment approaches of this entity are complex and require a skilled and experienced multidisciplinary team.Authors report their experience with a case of FS of humerus showing a pathologic complete response to neo-adjuvant chemotherapy based on adriamycin, cispla...