CT evaluation of spontaneously ruptured renal angiomyolipomas with massive hemorrhage spreading into multi-retroperitoneal fascia and fascial spaces.

Background: Renal angiomyolipomas (RAMLs) can spontaneously rupture and induce hemorrhage that is usually confined to the perirenal space (PS) but may spread beyond the PS into other retroperitoneal fascia and fascial spaces, including up to the subdiaphramatic and down to pelvic extra-peritoneal regions.

Purpose: To evaluate the computed tomography (CT) manifestations of renal angiomyolipoma (RAML) associated with spontaneous rupture and massive hemorrhage spreading beyond the PS into other retroperitoneal fascia and fascial spaces, including up to the subdiaphramatic and down to pelvic extra-peritoneal regions.

Material And Methods: The CT scans of seven patients with spontaneously ruptured of RAMLs and massive hemorrhage (surgically and pathologically confirmed) were retrospectively reviewed.

Radiologic and anatomic study of the extraperitoneal space associated with the rectum.

Objective: The objective of our study was to clarify the anatomic and radiologic features of the extraperitoneal fasciae and fascial spaces associated with the rectum.

Materials And Methods: Fourteen embalmed cadavers were studied: two for gross anatomy; six for sectional anatomy, of which two underwent histologic study; and six for space perfusion study. These examinations were followed by CT and cross dissection to observe the pelvic extraperitoneal fasciae and the role of the fasciae in the anatomic subdivision and communication of the fascial spaces.

Addison's disease due to adrenal tuberculosis: MRI features.

Background: Findings of adrenal tuberculosis with MR scanning have never been reported in the literature. The aim of this study was to determine MR characteristics for tuberculous Addison's disease, and evaluate the utility of MR imaging as a useful diagnosis tool of the entity.

Patients And Methods: Eighteen patients with proven adrenal tuberculosis were included.

A study of multi-detector row CT scan on greater omentum in 50 individuals: correlating with anatomical basis and clinical application.

Background: In view of the descriptions of the CT manifestations on the greater omentum (GO) were not precise and detailed enough in the previous literature, we tried to evaluate the radiologic-anatomical features of the GO and to address the related clinical implications for the radiologic diagnosis and surgical application.

Methods: We evaluated the GO by using multi-detector row CT (MDCT) scanning in 50 individuals correlating with anatomical basis and clinical application. Emphasis was placed on the following items: the anatomical distribution and location of the GO; the CT manifestations of the vasculature, fatty tissue and lymph nodes.

Extramedullary plasmacytoma involving the bilateral adrenal glands on MR imaging.

We report here on a 64-year-old woman with extramedullary plasmacytoma involving the bilateral adrenal glands. Primary adrenal extramedullary plasmacytoma is extremely rare and only three cases of extramedullary plasmacytoma in the unilateral adrenal gland have currently been reported on. This case is of interest in that the bilateral adrenals were involved.

Uncommon adrenal masses: CT and MRI features with histopathologic correlation.

Adrenal glands are common sites of diseases. With dramatically increased use of computed tomography (CT) and magnetic resonance (MR) imaging, more and more uncommon adrenal masses have been detected incidentally at abdominal examinations performed for other purposes. In this article, uncommon adrenal masses are classified as cystic masses (endothelial cysts, epithelial cysts, parasitic cysts, and pseudocysts), solid masses (ganglioneuroma, ganglioneuroblastoma, extramedullary plasmacytoma (EMP), neurilemmoma, and lymphoma), fat-containing masses (myelolipoma, teratoma), and infectious masses (tuberculoma), and the imaging features of these uncommon masses are demonstrated.

Addison's disease due to adrenal tuberculosis: contrast-enhanced CT features and clinical duration correlation.

Purpose: To describe CT morphology of untreated adrenal tuberculosis during the different stages of the natural history of the disease and to evaluate the diagnostic implications of CT features.

Materials And Methods: We retrospectively evaluated CT features in 42 patients with documented adrenal tuberculosis for the location, size, morphology, and enhancement patterns shown on CT images. The clinical duration were correlated with the CT features.

Distribution and characteristics of hematogenous disseminated tuberculosis within the abdomen on contrast-enhanced CT.

Background: The incidence of abdominal tuberculous lymphadenopathy never appears low. In addition to infecting the abdominal lymph nodes through the digestive tract, the tuberculosis bacteria can also infect the abdominal lymph nodes and extra-nodal organs through hematogenous dissemination. This study investigated contrast-enhanced CT features and anatomic locations of hematogenous disseminated tuberculosis involving abdominal organs.

Utility of multidetector CT in the diagnosis of gastric bare area invasion by proximal gastric carcinoma.

Purpose: To investigate the utility of multidetector CT (MDCT) in the diagnosis of gastric bare area (GBA) invasion by proximal gastric carcinoma (PGC).

Methods: Sixty-eight consecutive patients with biopsy-proven PGC underwent MDCT scan prior to gastrectomy. We evaluated the CT images separately for the site, size, depth, lymph node, and enhancement characteristic of each case.

Dynamic CT Evaluation of Tumor Vascularity in Renal Cell Carcinoma.

Objective: The purpose of our study was to evaluate the correlation between the enhancement parameters of dynamic CT; the carcinoma tissue microvessel density (MVD, a hotspot method to provide a histologic assessment of tumor vascularity); and tumor nuclear grade in renal cell carcinomas.

Subjects And Methods: Twenty-four patients with histologically diagnosed renal cell carcinoma underwent dynamic enhanced CT. Enhancement parameters, slope of the time-density curve, the density difference before and after tissue enhancement (deltaH), tissue blood ratio (TBR), and area under the time-density curve (AR), were calculated for all lesions.

Differentiation between tuberculosis and primary tumors in the adrenal gland: evaluation with contrast-enhanced CT.

The aim of the present study is to determine imaging criteria for differentiating tuberculosis from primary tumors in the adrenal gland on contrast-enhanced CT. Non-contrast and contrast-enhanced CT features in 108 patients with adrenal tuberculosis (n = 34) and primary tumor (n = 74) were retrospectively assessed for the location, size, calcification and enhancement patterns. The primary tumors included 41 adenomas, 11 pheochromocytomas, 4 carcinomas, 3 lymphomas, 6 myelolipomas, 6 ganglioneuromas, 2 neurilemmomas and 1 ganglioneuroblastoma.

Single-level dynamic spiral CT of hepatocellular carcinoma: correlation between imaging features and density of tumor microvessels.

Aim: To investigate the correlation of enhancement features of hepatocellular carcinoma (HCC) revealed by single-level dynamic spiral CT scanning (DSCT) with tumor microvessel density (MVD), and to determine the validity of DSCT in assessing in vivo tumor angiogenic activity of HCC.

Methods: Twenty six HCC patients were diagnosed histopathologically. DSCT was performed for all patients according to standard scanning protocol.