MDCT scan visualizes the Adamkiewicz artery.
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Aged↗
Biomedical subjects
Kenji Matsuzaki
Publications and source records attributed to Kenji Matsuzaki.
Descending aorta to carotid bypass for takayasu arteritis as a redo operation.
In Takayasu arteritis recurrent brain ischemia, due to bypass graft failure, is frequent. Redo bypass grafting from the ascending aorta may be at risk if a failing but patent graft that is critical for brain blood flow is present, because partial clamping the ascending aorta may disturb graft flow if the ascending aorta is short. We report such a patient who successfully underwent redo bypass grafting from the descending aorta. In type I Takayasu arteritis, this operation may be valuable because the descending aorta is usually disease free and brain blood flow is maintained during the operation.
Adult↗
Bilateral femoral artery aneurysms in a patient with long-standing traumatic paraplegia: report of a case.
The etiology of femoral artery aneurysms is believed to involve the interaction of a genetic alteration that predisposes to the loss of arterial wall integrity. This is precipitated by local forces such as repeated flexion of the arteries at the hip. We describe herein a case of bilateral femoral and right internal iliac artery aneurysms that developed in a patient with long-standing paraplegia. This could suggest that alterations in the arterial wall caused by stress and kinking during hip flexion may not play a principal role in the pathogenesis of nonspecific femoral artery aneurysms.
Aged↗
Magnetic resonance imaging and spectroscopy in a patient with treated methylmalonic acidemia.
Magnetic resonance imaging (MRI) and proton magnetic resonance spectroscopy (proton MRS) findings before and after carnitine therapy in a patient with methylmalonic acidemia (MMA) are evaluated. The hyperintensity on T2-weighted image and diffusion-weighted image and the decreased apparent diffusion coefficient of bilateral basal ganglia were normalized in parallel with normalization of the elevated lactate levels and the decreased N-acetyl-aspartate levels, corresponding to improvement of clinical symptoms. MRI and proton MRS may serve as a suitable, noninvasive modality for monitoring treated MMA.
Basal Ganglia↗
Localized pseudomyxoma peritonei in the female pelvis simulating ovarian carcinomatous peritonitis.
Two cases of localized pseudomyxoma peritonei in the female pelvic cavity associated with a ruptured appendiceal mucocele and ovarian involvement that mimicked ovarian carcinomatous peritonitis were evaluated. Subtle omental irregularity adjacent to the cecum may suggest the hidden appendiceal origin reflecting localized carcinomatous peritonitis caused by the occult rupture of the mucocele. Mucinous fluid-like materials were localized in the pelvic cavity with scalloping of the uterus, which may be the diagnostic finding of pseudomyxoma peritonei.
Aged↗
Ovarian cystadenofibromas: characteristic magnetic resonance findings with pathologic correlation.
Ovarian cystadenofibroma is a benign tumor and may appear as a multilocular cystic mass with solid nodular components mimicking malignant ovarian tumor. Preoperative diagnosis is required to avoid excess surgical procedure. We report characteristic magnetic resonance imaging (MRI) findings of 2 cases with pathologic correlation. On T2-weighted images, the solid components of the tumors showed very low intensity, in which very high intense tiny cysts were present reflecting dense fibrous stromal proliferation with scattered small cystic glandular structures. This "black sponge"-like appearance was considered to be diagnostic.
Aged↗
Malignant transformation of pelvic endometriosis: MR imaging findings and pathologic correlation.
Malignant transformation is a rare complication of endometriosis. Endometriosis-associated ovarian cancers are seen more often in younger women than are ovarian cancers without endometriosis, and early detection is important to improve the prognosis and preserve fertility. However, normal decidual change of the ectopic endometrium in an endometrioma during pregnancy must be differentiated from malignant transformation. The finding that is most important for a diagnosis of malignant change is the presence of one or more contrast material-enhanced mural nodules within a cystic mass at magnetic resonance (MR) imaging. Dynamic subtraction MR imaging is useful in depicting small contrast-enhanced nodules within the hyperintense endometrioma on T1-weighted images. Intracystic coagulate may mimic a mural nodule; the absence of contrast enhancement is the diagnostic clue to its benignity. Enlargement of the endometrioma and the disappearance of shading within the mass on T2-weighted images are suggestive of malignant transformation.
Endometrial Neoplasms↗