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Biomedical subjects

M Jimi

Publications and source records attributed to M Jimi.

14 recordsLinked to original sources
PubMed1999

Pseudolesions of the liver possibly caused by focal rib compression: analysis based on hemodynamic change.

OBJECTIVE: The purpose of this study is to show and analyze the CT appearance of pseudolesions of the liver caused by rib compression and to discuss the possible mechanism on the basis of findings of incremental dynamic CT, CT during arterial portography, and CT hepatic arteriography. CONCLUSION: Focal compression of the liver caused by curved ribs can cause transient focal diminishment of portal venous perfusion without significantly altering hepatic arterial perfusion. Such diminishment may be observed as low-density areas on the early phase of incremental dynamic CT.

Aged↗
PubMed1998

Autoimmune pancreatitis: CT and MR characteristics.

OBJECTIVE: Our goal was to elucidate the CT and MR imaging characteristics in patients with autoimmune pancreatitis, which is a reversible chronic pancreatitis with an autoimmune cause. CONCLUSION: On CT and MR imaging, a capsulelike rim, which is thought to correspond to an inflammatory process involving peripancreatic tissues, appears to be a characteristic finding of autoimmune pancreatitis. Also, diffuse pancreatic enlargement along with hypointensity on T1-weighted MR images and delayed enhancement on dynamic CT and MR studies are other features of this disorder.

Aged↗
PubMed1998

Value of MR cholangiopancreatography in evaluating choledochal cysts.

OBJECTIVE: The aim of this retrospective study was to clarify whether MR cholangiopancreatography (MRCP) is a suitable replacement for ERCP in evaluation of the choledochal cyst. MATERIALS AND METHODS: Sixteen patients (six adult and 10 pediatric) with choledochal cysts underwent MRCP using a half-Fourier acquisition single-shot turbo spin-echo sequence. Extent of the cyst, defects within the biliary tree, and presence or absence of the anomalous junction of the pancreaticobiliary duct were evaluated. Findings were compared with those of ERCP. RESULTS: MRCP better defined the proximal biliary tree than did ERCP in two patients. Defects within the biliary tree were diagnosed correctly on MRCP in eight patients; however, two defects within the distal common bile duct were missed in pediatric patients. The presence of the anomalous junction of the pancreaticobiliary duct was revealed accurately by MRCP in all adult patients but was revealed accurately in only four of the 10 pediatric patients. CONCLUSION: MRCP appears to offer diagnostic information that is equivalent to that of ERCP for assessment of choledochal cysts in adults. In pediatric patients, MRCP should not replace ERCP; however, MRCP can play an important role as a noninvasive examination and should be considered a first-choice imaging technique for evaluation of choledochal cysts.

Adult↗
PubMed1996

Traumatic rupture of hepatic hemangioma.

Although hepatic hemangioma is common, its rupture after trauma is rare. We report a 47-year-old woman with a traumatic hepatic hemangioma rupture following a traffic accident who successfully underwent operation. Only four cases of hepatic hemangioma rupture caused by blunt trauma have been reported including this one. Each patient (two men and two women) had a giant right lobe hemangioma. The causal injury included a traffic accident in two, a fall in one, and minor trauma in another. Three patients underwent surgery, and one was conservatively managed. All the patients survived.

Female↗
PubMed1986

[Preoperative systemic chemotherapy (FAC) in 3 cases of advanced breast cancer].

Three cases of advanced breast cancer treated with preoperative systemic chemotherapy (FAC) were reported. Radical mastectomy was performed in all three cases after partial response to the systemic chemotherapy. Systemic chemotherapy itself is easy to manage and its resulting response rates and side effects are comparable to those of intra-arterial infusion chemotherapy.

Adult↗
PubMed1977

Value of prophylactic oophorectomy in advanced breast cancer with parasternal lymph nodes metastasis.

In order to improve the poor prognosis of advanced breast cancer cases with positive parasternal lymph nodes metastasis, prophylactic oophorectomy was performed in 25 unselected cases. In a retrospective study on the breast cancer cases operated on from 1958 to 1969, comparison of eight advanced breast cancer cases with positive parasternal lymph nodes metastasis after radical mastectomy of Halsted type and parasternal lymph nodes dissection with, and 17 cases without prophylactic bilateral oophorectomy was made with respect to the survival rate, the survival time pattern by Mantel-Haenszel's procedure in their entirety and the recurrence rate. These results suggest the effectiveness of prophylactic oophorectomy for the advanced breast cancer.

Breast Neoplasms↗
PubMed1976

Lithogenic bile.

So-called authors' lithogenic bile [Ch greater than 7.5 mg/ml, (TBS + PL)/Ch weight ratio less than 20] corresponds to the bile which falls well above the micellar zone boundary on triangular coordinates with high concentration of cholesterol. The authors supposed that, in man like hamsters and squirrel monkeys, in the process of alimentary formation of cholesterol gallstones gallbladder bile of which cholesterol concentration was high, and (TBS + PL)/Ch ratio was as low as that of gallbladder bile with cholestrol gallstones seemed to be lithogenic.

Animals↗
PubMedDate not supplied

MRI of groove pancreatitis.

PURPOSE: The purpose of this work is to describe the findings on MRI in patients with groove pancreatitis, a specific form of chronic pancreatitis affecting the groove between the pancreatic head, the duodenum, and the common bile duct. METHOD: MR images, including MR cholangiopancreatography, of five patients with groove pancreatitis were reviewed. Three patients underwent pancreatoduodenectomy due to serve duodenal stenosis, and the MR findings were compared to the histologic findings. RESULTS: A sheet-like mass was demonstrated between the pancreatic head and the duodenum in all patients. The masses were hypointense relative to pancreatic parenchyma on T1-weighted images and iso- to slightly hyperintense on T2-weighted images. After administration of Gd-DTPA, the masses showed delayed enhancement. Histologically, fibrous scar tissue was detected in the groove. CONCLUSION: MR images can clearly demonstrate the fibrous tissue in the groove in groove pancreatitis, and MR cholangiopancreatography can also provide useful information.

Adult↗
PubMedDate not supplied

Hepatic angiomyolipoma: report of changing size and internal composition on follow-up examination in two cases.

We present two cases of hepatic angiomyolipoma in which the size and internal composition of the tumor changed during the course of follow-up study. The tissue elements composing the tumor are thought to grow or regress independently during the disease's clinical course. Radiologists should be aware that hepatic angiomyolipoma can change in size and internal composition during its natural course.

Adult↗
PubMedDate not supplied

Intracranial metastasis of renal cell carcinoma: MR imaging.

The purpose of this study was to evaluate the magnetic resonance (MR) findings of intracranial metastatic tumors of renal cell carcinomas (RCCs). MR images of seven patients with intracranial metastases of RCCs were retrospectively reviewed. Each of the seven patients had a single lesion, including five supratentorial intraparenchymal lesions, one 4th ventricular lesion, and one pituitary lesion. Intra- and/or peritumoral flow voids were observed in five of the seven lesions. The signal intensities of the tumors were not specific. All lesions showed gadolinium enhancement, including solid (3), nearly solid (2), and ring enhancement (2). We concluded that intra- and/or peritumoral flow void is a relatively characteristic MR finding of intracranial metastases of RCCs.

Aged↗