Hepatic cavernous hemangiomas: relationship between speed of intratumoral enhancement during dynamic MRI and apparent diffusion coefficient on diffusion-weighted imaging.

Objective: To investigate the relationships between the apparent diffusion coefficients (ADCs) on diffusion-weighted imaging (DWI) and the speed of contrast-enhancement in hepatic hemangiomas.

Materials And Methods: Sixty-nine hepatic hemangiomas (≥ 1 cm) were evaluated with DWI, by using multiple b values (b = 50, 400, 800 s/mm(2)), followed by a gadolinium-enhanced dynamic MRI. The lesions were classified into three groups, according to the speed of contrast-enhancement on the portal phase.

Diagnostic efficacy and characteristic feature of MRI in pulmonary hamartoma: comparison with CT, specimen MRI, and pathology.

Objectives: To determine the diagnostic efficacy of magnetic resonance imaging (MRI) in pulmonary hamartoma and observe the significant MRI features, other than fat or characteristic calcification revealed by computed tomography (CT).

Methods: Six hamartomas were included and surgically resected, and we prospectively studied MRI in cases showing suggestive findings of hamartoma or indeterminate nodule on CT. We analyzed the tumor on CT and MRI (available enhancement study in 4) focusing on cleftlike structure in comparison with specimen MRI (n = 3) and histopathologic findings: presence, shape, and distribution of the cleftlike structure and signal intensity and enhancement of the cleftlike structure and main portion.

Burkitt's lymphoma representing periportal infiltrating mass on CT.

Imaging findings of secondary hepatic lymphoma have been reported as variable, ranging from single or multiple small nodules to diffuse infiltrative tumor patterns. We hear present a rare case report concerning aggressive B cells, secondary Burkitt's lymphoma in non-AIDS demonstrating a surprising periportal lymphoma infiltration, without upper abdominal lymphadenopathy or splenomegaly on the sonography and CT scans. Clinically, the case was characterized by atypical and highly aggressive course, with the patient presenting an abruptly developed obstructive jaundice with rapidly deteriorating hepatic function that could be indicative of cholestatic hepatitis, which differs in its clinical manifestations from hepatic lymphoma without functional deterioration in respect of its non-tissue destructive growth pattern.

Sclerosing lobular hyperplasia: sonographic pathologic correlation.

The objective was to evaluate the sonographic findings of sclerosing lobular hyperplasia (SLH) of the breast and to correlate the sonographic findings and the pathologic features. This study consisted of 9 patients with pathologically proven sclerosing lobular hyperplasia who had undergone a preoperative imaging study. We retrospectively reviewed 9 ultrasonograms and 6 mammograms.

Steatocystoma multiplex: mammographic and sonographic manifestations.

Objective: This study was performed to identify the typical imaging features of steatocystoma multiplex on mammography and sonography.

Conclusion: Steatocystoma multiplex is manifest by multiple clinically palpable skin-colored or yellow nodules scattered on the axillae and the anterior chest wall. Steatocystoma multiplex is included in the differential diagnoses of lipoma, fat necrosis, galactocele, epidermal cyst, and so on, so radiologists need to be aware of its distinguishing features.