Mediastinal hemangioma is a rare tumor and only few cases have been reported in the literatures. We have experienced one case of cavernous hemangioma occuring at the superior vena cana. The patient was a thrity-five year old female with no specific symtoms except palpable cystic mass in the right cervical area. A routine chest radiography showed an upper mediastinal mass. Computed Tomography showed about 4x5 cm sized cystic mass communicating to the superior vena cava 2 cm above of the veno-atrial junction. After the evaluation, surgical excision was performed and the pathologic diagnosis was confirmed to cavernous hemangioma. Postoperative course was uneventful and the patient has been followed up without any problems.
Diagnosis ; Female ; Hemangioma ; Hemangioma, Cavernous* ; Humans ; Mediastinal Neoplasms ; Radiography ; Thorax ; Vena Cava, Superior

Cavernous hemangiomas of the mediastinum are rare tumors. A 3 year and 8 month-old female patient was referred because of an abnormal chest radiograph. Chest X-ray revealed abnormal shadow occupying nearly the entire left thoracic cavity. Surgical excision was performed and pathologic diagnosis was confirmed as 15X10 cm sized cavernous hemangioma. On the eighth postoperative day, the patient was discharged without any complications and has been followed up without any problems.
Diagnosis ; Female ; Hemangioma ; Hemangioma, Cavernous* ; Humans ; Infant ; Mediastinum* ; Radiography, Thoracic ; Thoracic Cavity ; Thorax

Cavernous hemangiomas of the mediastinum are rare tumors. A 3 year and 8 month-old female patient was referred because of an abnormal chest radiograph. Chest X-ray revealed abnormal shadow occupying nearly the entire left thoracic cavity. Surgical excision was performed and pathologic diagnosis was confirmed as 15X10 cm sized cavernous hemangioma. On the eighth postoperative day, the patient was discharged without any complications and has been followed up without any problems.
Diagnosis ; Female ; Hemangioma ; Hemangioma, Cavernous* ; Humans ; Infant ; Mediastinum* ; Radiography, Thoracic ; Thoracic Cavity ; Thorax

Meningioangiomatosis is a rare benign hamartomatous lesion. We describe a case of meningioangiomatosis in an 18-year-old boy with a 15 year history of seizures. Computed tomography reveals an irregular calcification density along the right temporal gyrus. Microscopically, irregularly branched blood vessels, surrounded by a concentric arrangement of proliferating spindle cells, are extending into the gray matter from the meningeal surface. Ultrastructural and immunohistochemical examination failed to demonstrate features of meningothelial cell origin in this case. This is the first case of meningioangiomatosis published in Korea along with immunohistochemical and electron microscopic studies. The pathogenesis and previous reports of this lesion will be discussed.
Adolescent ; Brain Neoplasms/*pathology/radiography/ultrastructure ; Hemangioma/*pathology/radiography/ultrastructure ; Humans ; Immunohistochemistry ; Male ; Microscopy, Electron

Renal hemangioma is an uncommon benign tumor which usually causes painless or painful gross hematuria. Its preoperative diagnosis is extremely difficult or even impossible. We experienced three cases of renal hemangioma, located mainly at the pelvocalyceal junction or in the inner medulla. US demonstrated variable echogenecity, and CT revealed a lack of significant enhancement. Where there is gross hematuria in a young adult, especially when the renal mass located in the pelvocalyceal junction or inner medulla shows little enhancement on CT, renal heman-gioma should form part of the differential diagnosis.
Adult ; Case Report ; Diagnosis, Differential ; Hemangioma, Capillary/*radiography/*ultrasonography ; Hemangioma, Cavernous/*radiography/*ultrasonography ; Hematuria/etiology ; Human ; Kidney Neoplasms/*radiography/*ultrasonography ; Male ; Tomography, X-Ray Computed

Lipiodol, lipid soluble contrast media, was applied to 59 patients, who was clinically suspected to havehepatic tumor, in the department of Diagnotic Radiology, Seoul National University Hospital. The results of theclinical use of Lipiodol were as follows: 1. The clinical diagnosis was hepatocellular carcinoma(HCC) in 50 cases,cavernous hemangioma in 4 cases, metastasis in one case and others in 4 cases. 2. After hepatic arteriography,Lipiodol only was injected in 28 cases, mixture of Lipiodol and Mitomycin was injected in 22 cases andtranscatheter arterial embolization was performed additionally after injection of Lipiodol and Mitomycin in 9cases. 3. Among the 50 cases of HCC, Lipiodol was accumulated in the lesion in 49 cases. However, similaraccumulation of Lipiodol occured in a metastatic cancer and cavernous hemangiomas. 4. Plain radiographic patternsof Lipiodol accumulation could be divided into fine granular type, nodular type and linear or branching type. Thelinear or branching pattern disappeared in follow-up radiography after one week. 5. As minor complication afterLipiodol Injection. GOY &GPT were transiently elevated in 30 cases and normalized in a week. Abdominal pain andfever developed but subsided in a week too. 6. When an appropriate lipid-soluble chemotherapeutic agent orradioisotope is applied to this phenomenon in which Lipiodol is selectively accumulated in hepatic tumor, thediagnostic and therapeutic values will be more enhanced.
Abdominal Pain ; Angiography ; Contrast Media ; Diagnosis ; Ethiodized Oil ; Follow-Up Studies ; Hemangioma ; Hemangioma, Cavernous ; Humans ; Mitomycin ; Neoplasm Metastasis ; Radiography ; Seoul

No abstract available.
Gastroscopy ; Glomus Tumor/pathology/*radiography/ultrasonography ; Hemangioma/radiography ; Humans ; Liver Neoplasms/radiography ; Male ; Middle Aged ; Stomach Neoplasms/pathology/*radiography/ultrasonography ; Tomography, X-Ray Computed

Radiological imaging plays a crucial role in the diagnosis of hepatocellular carcinoma (HCC) as the noninvasive diagnosis of HCC in high-risk patients by typical imaging findings alone is widely adopted in major practice guidelines for HCC. While imaging techniques have markedly improved in detecting small liver lesions, they often detect incidental benign liver lesions and non-hepatocellular malignancy that can be misdiagnosed as HCC. The most common mimicker of HCC in cirrhotic liver is nontumorous arterioportal shunts that are seen as focal hypervascular liver lesions on dynamic contrast-enhanced cross-sectional imaging. Rapidly enhancing hemangiomas can be easily misdiagnosed as HCC especially on MR imaging with liver-specific contrast agent. Focal inflammatory liver lesions mimic HCC by demonstrating arterial-phase hypervascularity and subsequent washout on dynamic contrast-enhanced imaging. It is important to recognize the suggestive imaging findings for intrahepatic cholangiocarcinoma (CC) as the management of CC is largely different from that of HCC. There are other benign mimickers of HCC such as angiomyolipomas and focal nodular hyperplasia-like nodules. Recognition of their typical imaging findings can reduce false-positive HCC diagnosis.
Carcinoma, Hepatocellular/*diagnosis/radiography ; Diagnosis, Differential ; Hemangioma/complications/radiography/ultrasonography ; Hepatitis B/complications ; Humans ; Inflammation/radiography/ultrasonography ; Liver/radiography/ultrasonography ; Liver Cirrhosis/complications/radiography ; Liver Neoplasms/*diagnosis/radiography ; Magnetic Resonance Imaging ; Non-alcoholic Fatty Liver Disease/radiography/ultrasonography

OBJECTIVE: To compare computed tomography (CT) and magnetic resonance imaging (MRI) findings between two histological types of nasal hemangiomas (cavernous hemangioma and capillary or lobular capillary hemangioma). MATERIALS AND METHODS: CT (n = 20; six pre-contrast; 20 post-enhancement) and MRI (n = 7) images from 23 patients (16 men and seven women; mean age, 43 years; range, 13-73 years) with a pathologically diagnosed nasal cavity hemangioma (17 capillary and lobular capillary hemangiomas and six cavernous hemangiomas) were reviewed, focusing on lesion location, size, origin, contour, enhancement pattern, attenuation or signal intensity (SI), and bony changes. RESULTS: The 17 capillary and lobular hemangiomas averaged 13 mm (range, 4-37 mm) in size, and most (n = 13) were round. Fourteen capillary hemangiomas had marked or moderate early phase enhancement on CT, which dissipated during the delayed phase. Four capillary hemangiomas on MRI showed marked enhancement. Bony changes were usually not seen on CT or MRI (seen on five cases, 29.4%). Half of the lesions (2/4) had low SI on T1-weighted MRI images and heterogeneously high SI with signal voids on T2-weighted images. The six cavernous hemangiomas were larger than the capillary type (mean, 20.5 mm; range, 10-39 mm) and most had lobulating contours (n = 4), with characteristic enhancement patterns (three centripetal and three multifocal nodular), bony remodeling (n = 4, 66.7%), and mild to moderate heterogeneous enhancement during the early and delayed phases. CONCLUSION: CT and MRI findings are different between the two histological types of nasal hemangiomas, particularly in the enhancement pattern and size, which can assist in preoperative diagnosis and planning of surgical tumor excision.
Adolescent ; Adult ; Aged ; Female ; Hemangioma, Capillary/*radiography ; Hemangioma, Cavernous/diagnosis/*radiography ; Humans ; *Magnetic Resonance Imaging ; Male ; Middle Aged ; Nasal Cavity/radiography ; Paranasal Sinuses/*radiography ; Retrospective Studies ; *Tomography, X-Ray Computed ; Young Adult

We report a hemodynamical assessment of the blood turnover pattern as well as the imaging of cavernous hemangioma in a cavernous sinus using time-resolved contrast enhanced 2D projection MRA, also known as MR-DSA, and conventional digital subtraction angiography (DSA), before and after radiotherapy. MR-DSA showed very fast dynamical images of a contrast turnover pattern and was well matched with the findings obtained from DSA. MR-DSA is a non-invasive study, and can replace DSA in examining a vascular tumor for the initial work-up and follow-up examination.
Angiography, Digital Subtraction/*methods ; Cavernous Sinus/*radiography ; Female ; Hemangioma, Cavernous/*radiography ; *Hemodynamic Processes ; Human ; Magnetic Resonance Angiography ; Middle Aged