European Journal of Radiology Extra最新文献

Hepatic schistosomiasis presenting as pseudotumoral mass is rare, and to our knowledge, no such presentation has been described in the English literature. We report two cases of atypical presentation of hepatic schistosomiasis as pseudotumoral mass and as hepatic abscess, and describe their radiologic findings.

Bone metastases occur in 50% of patients with renal cell carcinoma, approximately 15% of these occur in the spine. In patients with disseminated disease with osseous metastases in vertebral bodies without options for curative treatment, cement injection in the vertebrae can be a useful tool in the management of pathologic fractures by allowing stabilization of the spine and ameliorating pain.

A potential contraindication to this procedure is posterior vertebral wall involvement due to increased risk of cement leakage into the epidural space. In some of these cases, embolization with PVA particles and/or surgery is necessary.

We present a case of lumbar spine metastases from renal cell carcinoma, with posterior wall involvement, that was treated by endovascular embolization using Onyx polymer. To the best of our knowledge, embolization of this kind of lesion, using this embolic agent, has not been previously reported.

A 54 year-old-man presented with chest fullness and difficulty of breathing for 3 months. CT thorax revealed a heterogeneously enhancing mediastinal mass for which CT-guided biopsy results were initially inconclusive. The patient underwent ¹⁸F-FDG-PET/CT study for further metabolic characterisation and staging of the disease. ¹⁸F-FDG -PET/CT showed heterogeneous FDG-avid mediastinal mass with adjoining multiple FDG-avid hilar lymph nodes, pulmonary and bone metastasis. Final diagnosis of malignant thymoma was confirmed after a successful PET/CT-guided needle biopsy.

Intracranial lipomas are rare lesions. We report a patient presenting with complex partial seizures who was found to have right frontal cortical lipoma associated with cortical dysplasia. The superficial lobar location and association with cortical dysplasia are both rare occurrences and only few cases have been reported in literature till date.

Also described as arteriovenous fistula, cirsoid aneurysms, arteriovenous aneurysm, racemose aneurysm, pulsating angioma, or cavernous angioma, uterine AVM (arteriovenous malformation) is a rare vascular abnormality of the female pelvis, with less than 100 cases reported in the literature. Uterine AVM may be congenital or acquired. Congenital uterine AVM is due to the abnormal embryological development of the uterine vasculature. Acquired ones are usually due to uterine trauma or surgery. Most of the uterine AVM occur in females of the reproductive age group. Bleeding is the commonest presentation in these patients, which may be torrential and life threatening.

Gray scale ultrasonographic features are nonspecific and include multiple anechoic spaces within the myometrium and the endometrium. Doppler ultrasonography is considered as a good screening test and may aid in diagnosis as well. CT and MR imaging can also aid in the diagnosis of uterine AVM and can well delineate the extent of the lesion. However angiography is considered as the gold standard for the diagnosis of uterine AVM. Treatment of such cases with uterine AVM is dependent of the presentation, size and the location of the lesion and desire to retain fertility. Now-a-days intra-arterial embolization is considered as the treatment modality of choice. We report two cases of uterine arteriovenous malformation which were diagnosed by color Doppler ultrasonography.

Breast lymphoma is uncommon, accounting for approximately 0.15% of malignant breast lesions. It usually originates from lymphocytes in breast parenchyma and ipsilateral axillary lymph nodes. In breast, diffuse large B-cell lymphoma is more common than T-cell lymphoma. Here, we report a rare case of cutaneous natural killer/T-cell (NK/T) lymphoma mimicking panniculitis of the breast, that was presented as a growing palpable mass and pain in both breasts of a 33-year-old male patient. Ultrasonographic appearance was extensive hyperechogenicity in subcutaneous fat layer of mammary areas, mimicking panniculitis or fat necrosis. Pathologically, a histologic subtype was extranodal natural killer/T-cell lymphoma, nasal-type.

We present a case of a cardiac hamartoma, which is an exceedingly rare, pathologically benign, primary cardiac tumour. We illustrate the imaging appearance of this lesion on CT and MRI, and demonstrate the complementary roles that these two modalities play in the assessment of cardiac masses, specifically in the characterization of fatty content and calcifications. Finally, we offer a discussion of how a cardiac hamartoma may be differentiated from other, more common cardiac masses.

Primary epiphyseal lesions in children are rare and usually benign, with chondroblastoma being the most typical for this location and age. Very occasionally, malignant bone tumors may occur primary within long bones epiphyses during growth; few reports are given on such single cases in orthopedic and radiological scientific literature. This paper presents a case report on a malignant primitive neuroectodermal tumor affecting primary distal femoral epiphysis in a child, having a benign-looking lytic appearance. Short literature review and discussion on possible differential diagnosis of such lesion is also included.

A case of a 75-year-old gentleman with an unusual presentation of metallosis 3 years after a left hip resurfacing arthroplasty is presented. This report illustrates the atypical appearances of metallosis using CT and other imaging modalities, which has been only sparsely described in the literature.

We report the findings of a patient with a history of mesenteric non-Hodgkin's B-cell lymphoma who presented with a fatal hemorrhage of the superior mesenteric artery.