CT features of ovarian Brenner tumor and a report of 9 cases / 中华肿瘤杂志

<p><b>OBJECTIVE</b>In order to improve the preoperative diagnostic accuracy, the computed tomographic (CT) features of ovarian Brenner tumor were described and analyzed.</p><p><b>METHODS</b>CT image and clinical data of nine patients with pathologically confirmed Brenner tumor were collected and analyzed retrospectively. There were 8 benign lesions and 1 borderline lesion.</p><p><b>RESULTS</b>All lesions in the nine cases were unilateral, round, lobulated or irregular in shape and well defined, in a mean diameter of 7.8 cm. Among the nine cases, 5 were benign tumors with uniform structure, 3 were benign tumors accompanied with other pathological components, and 1 was borderline tumor. On the CT images, the 5 uniform benign lesions showed to be solid tumor of low density (lower than that of muscle) or with small cyst inside, two of the 5 lesions had calcification, and other 2 lesions showed slightly heterogeneous enhancement after enhanced scanning. The 3 benign Brenner tumors accompanied with other pathological structures were solid-cystic or cystic, with a clear demarcation of solid and cystic components. The density of solid parts was lower than that of muscle, and slight enhancement, and one of them had calcification. The one borderline tumor was a heterogeneous solid one and its density was higher than that of muscle, with a large proportion of low density and large calcification, and moderately enhanced after enhancing. None of the 9 cases had metastasis or effusion.</p><p><b>CONCLUSION</b>Ovarian Brenner tumors are usually unilateral and often accompanied with other type of tumor components. When a tumor is of uniform component, the CT imaging often shows a homogeneous solid tumor with homogeneous or heterogeneous density. When a tumor is accompanied with other tumor components, it may be solid-cystic or cystic and has partial calcification. After enhancing, a benign Brenner tumor is slightly enhanced, while the borderline one is moderately/highly enhanced.</p>

Imaging features of nonepithelial tumors of the bladder / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To summarize the imaging features of nonepithelial tumors of the bladder.</p><p><b>METHODS</b>The Imaging findings in 20 surgically treated patients with pathologically proved nonepithelial tumors of the bladder were retrospectively analyzed. The tumors included leiomyoma (n = 9), pheochromocytoma (n = 6), leiomyosarcoma (n = 2), rhabdomyosarcoma (n = 1), carcinosarcoma (n = 1), inflammatory myofibroblastoma (n = 1).</p><p><b>RESULTS</b>The leiomyomas were round or ellipse in shape with a sharp border and homogeneous density, and showed a low signal intensity on T1WI and T2WI in 1/1 case; slight enhancement on CT after contrast enhancement in 6/7 cases; and a poor blood supply on color Doppler ultrasonography in 3/4 cases. The pheochromocytoma had a round or oval shape and clear border, and slightly lobulated in 4/6 cases, homogeneous density/echo/signal in 5/6 cases, calcification in 1 case, low signal intensity on T1WI and high signal intensity on T2WI in 1/1 case, moderate or marked enhancement on CT and MRI in 4/5 cases, and strong blood supply on color Doppler ultrasonography in 3/4 cases. The inflammatory myofibroblastoma showed the same imaging features as the pheochromocytomas. Other malignant tumors showed an irregular configuration, with a poorly defined border, heterogeneous density/echo/signal and moderate to strong enhancement on CT.</p><p><b>CONCLUSION</b>Most leiomyomas and pheochromocytomas of the bladder show some typical imaging features on CT, MRI and ultrasound, which are helpful in making correct diagnosis and treatment plan preoperatively. Other malignant nonepithelial bladder tumors do not show special imaging characteristics and can only be diagnosed qualitatively.</p>

Value of CT scanning in the diagnosis of early cervical carcinoma / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To investigate the value of CT scanning in preoperative diagnosis of early cervical carcinoma.</p><p><b>METHODS</b>Abdominal and pelvic CT scans (MPR pictures for 50 patients) in 102 cervical carcinoma patients proven by biopsy pathology were retrospectively analyzed and compared with surgical pathologic findings. The pathological stages included > or = Ia in 39 patients, Ib 1 in 35, Ib 2 in 21, IIa in 6, IIb in 1. The tumor detection ability, thickness of cervical tumor invasion, T stage and lymph node stage showed by CT scan were evaluated.</p><p><b>RESULTS</b>CT was not able to detect < or = Ia cervical carcinoma, however, CT was able to detect tumors in 71.4% of > or = Ib 1 stage (45/63) and 71.4% > or = Ib 2 (20/28), it also showed the depth of tumor invasion in 39.7% > or = Ib 1 (25/63). The overall accuracy of CT staging for tumor was 69.6% and the rate of metastatic lymph node detection 63.6% (7/11). With additional MPR pictures of spiral CT, the detection ability, vaginal involvement and objective shape of cervical tumor was improved. The cervical carcinoma in CT scan was found to be as homogeneous in 54.9% of patients (56/102), hypodense or heterogeneous in 42.2% (43/102), lower density nodual in 41.9% (18/43); occasionally as heterogeneous or hyperdensity noduals or irregular border of the cervix. The features of metastatic lymph nodes in CT scan were rounded or spheroid shape of soft tissue noduals with heterogeneous density caused by central necrosis and rim enhancement.</p><p><b>CONCLUSION</b>CT scanning may be valuable in detection of > or = Ib 1 rather than < Ib 1 stage early cervical carcinoma. The additional MPR pictures of spiral CT is not only helpful in detecting tumor but also in determining the extension of cervical carcinoma.</p>

Peritoneal tuberculosis mimicking advanced ovarian carcinoma: distinction based on CT findings / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To evaluate the computed tomography (CT) findings of peritoneal tuberculosis mimicking advanced ovarian carcinoma for better understanding of the CT manifestations and accurate preoperative diagnosis.</p><p><b>METHODS</b>CT findings of 18 cases with tuberculous peritonitis clinically simulating advanced ovarian cancer but pathologically proved otherwise were retrospectively reviewed.</p><p><b>RESULTS</b>1. Masses with solid and cystic structures were found in 6 cases and tumor-like flakes were found in 7 cases in the adnexal regions. The solid components and tumor-like flakes were moderately to markedly enhanced with dynamic CT scanning. 2. The peritoneum was smooth and slightly thickened in 10 cases; irregular thickening was seen in 4 cases, and patches of calcification in 3 cases. Thickened peritoneum with pronounced enhancement was noted in 7 cases. 3. Omentum with flake-like thickening was noted in 11 cases, coarse reticulate thickening in 2 cases and omental cakes in 2 cases. The margin of the thickened omentum with enhancement was ill-defined. 4. Nodular and stripe-like thickening of the mesentery was noted in 16 cases. 5. Ascites was present in all of the 18 cases, being encapsulated in 14 of them. 6. Lymphadenopathy was seen in 9 cases, all at located in the diaphragmatic levels. Enhancement of the lymph nodes was marked in 8 of the 8 patients examined. They appeared as ring-like (> 1 cm in diameter) or uniform (<or= 1 cm in diameter) enhancement.</p><p><b>CONCLUSION</b>CT examination combined with clinical manifestations helps differentiate tuberculous peritonitis from advanced ovarian cancer.</p>