PubMed Health⌕ Search

Biomedical subjects

Shuji Katoh

Publications and source records attributed to Shuji Katoh.

10 recordsLinked to original sources
PubMed2006

Resection of over 290 polyps during emergency surgery for four intussusceptions with Peutz-Jeghers syndrome: Report of a case.

A 41-year-old male patient with aggravated epigastralgia and nausea was admitted to Central Aizu General Hospital in February 1997. His past history showed a colonic polyp and anemia in the fourth decade. The patient looked healthy, but showed abdominal distension and tenderness, and pigmented lips. A plain abdominal X-ray revealed a dilation of the small intestine with niveau. Computed tomography disclosed multiple target signs. An emergency laparotomy clarified four intussusceptions of the small intestine with numerous polyps. Three were successfully reduced, while one jejunal intussusception was resected. Due to a fear of recurrence, a total of over 290 polyps were removed. His illness was diagnosed to be Peutz-Jeghers syndrome with a histology of hamartomatous polyps. He thereafter did well for 6 years, when he underwent an ileal resection for another intussusception caused by a newly grown lipoma. He was able to retain his job, but anemia and hypoproteinemia due to the proliferation of polyps necessitated treatments at the outpatient clinic. In May 2005, he underwent a third emergency laparotomy for an intussusception, followed by a resection of the ileum and 54 polyps. Since then he has been able to lead a normal life.

Adult↗
PubMed2006

[Solitary fibrous tumor of a kidney: a case report].

We report a case of solitary fibrous tumor (SFT) arising from a kidney. The patient was an 18-year-old female who visited our hospital with the complaint of left abdominal pain. Computed tomography revealed a slightly enhanced tumor of approximately 3 cm in diameter near the upper calyx of the left kidney. Renal cell carcinoma was suspected, and left nephrectomy was performed under laparoscopy. Histopathological examination revealed proliferation of CD34-positive spindle-shaped cells, and a diagnosis of SFT was made. There has been no local recurrence or distant metastasis for 15 months after the operation.

Adolescent↗
PubMed2005

[Malacoplakia in the ureter and bladder].

We report a case of malacoplakia in the ureter and bladder. A 78-year-old woman was admitted to our department for detailed examination of hydronephrosis. A small-fingertip-sized tumorous yellowish white lesion was detected by cytoscopy at a site that appeared to be the right side of the ureteral orifice. Transurethral resection was performed on the same site. Flat yellowish white protruding lesions were seen at two sites on the right ureter. Michaelis-Gutmann bodies were observed in biopsy specimens from both the bladder and ureter, and a diagnosis of malacoplakia was made. Ascorbic acid and bethanechol chloride were administered postoperatively. Endoscopy performed three months after the operation showed that the protruding lesions in the bladder and ureter had disappeared. Narrowing of the ureter or vesicoureteral reflux has not been seen to date.

Aged↗
PubMed2004

Ampulla ('takotsubo') cardiomyopathy of both ventricles: evaluation of microcirculation disturbance using 99mTc-tetrofosmin myocardial single photon emission computed tomography and doppler guide wire.

An 84-year-old woman was admitted to hospital with chest pain at rest. An electrocardiogram showed ST-segment elevation in leads II, III, aV(F) and V(2-6), and the 2-dimension echocardiogram showed apical ballooning akinesis and basal hyperkinesis of both ventricles. (99m)Tc-tetrofosmin myocardial single photon emission computed tomography (SPECT) showed severely reduced uptake in the apex. Coronary angiography did not show any organic stenosis, and epicardial coronary spasm was not provoked by the ergonovine loading test. Left ventriculography showed apical ballooning akinesis and basal hyperkinesis, which were also apparent on right ventriculography. The coronary flow velocity pattern showed rapid diastolic acceleration and deceleration times, and the coronary flow reserve measured with a Doppler guide wire was severely decreased. (99m)Tc-tetrofosmin myocardial SPECT showed improvement in the findings after 14 days, and the coronary flow velocity pattern and coronary flow reserve improved after 30 days. Left and right ventriculography both revealed mild improvement in the wall motion. These findings suggested that a microcirculation disturbance caused ampulla ('Takotsubo') cardiomyopathy.

Aged↗
PubMed2003

Assessment of Takotsubo (ampulla) cardiomyopathy using 99mTc-tetrofosmin myocardial SPECT--comparison with acute coronary syndrome.

UNLABELLED: We assessed Takotsubo (ampulla) cardiomyopathy compared with acute coronary syndrome (ACS) using two-dimensional echocardiography and 99mTc-tetrofosmin myocardial SPECT. METHODS: We examined 10 patients with Takotsubo cardiomyopathy and 16 with ACS at the time of emergency admission (acute phase), at three to nine days after the attack (subacute phase) and at one month after the attack (chronic phase). The left ventricle was divided into nine regions on echocardiograms and SPECT images, and the degree of abnormalities in each region was scored in five grades from normal (0) to severely abnormal (4). RESULTS: Coronary angiography revealed total or subtotal occlusion in patients with ACS but no stenotic legions in those with Takotsubo cardiomyopathy. The amount of ST segment elevation (mm) was 7.9 +/- 3.4 in patients with Takotsubo cardiomyopathy and 7.3 +/- 3.7 in those with ACS (N.S.). Abnormal wall motion scores on echocardiograms were 13.8 +/- 4.4, 4.4 +/- 3.8 and 1.8 +/- 2.3 during the acute, subacute and chronic phases in patients with Takotsubo cardiomyopathy, and 13.9 +/- 4.0, 11.7 +/- 3.7, 7.6 +/- 4.2, respectively in patients with ACS. The value of MB fraction of creatine phosphokinase (IU/l) was 34 +/- 23 in patients with Takotsubo cardiomyopathy and 326 +/- 98 in those with ACS (p < 0.001). Abnormal myocardial perfusion scores on 99mTc-tetrofosmin myocardial SPECT were 11.4 +/- 3.2, 3.2 +/- 3.3 and 0.7 +/- 1.1 during the acute, subacute and chronic phases respectively, in patients with Takotsubo cardiomyopathy, and 15.8 +/- 4.1, 13.5 +/- 4.4, 8.2 +/- 4.4, respectively, in those with ACS. The numbers of myocardial segments that did not uptake 99mTc-tetrofosmin during the acute phase were 0.5 +/- 0.8 and 3.6 +/- 2.8 in patients with Takotsubo cardiomyopathy and ACS, respectively. CONCLUSION: Impaired coronary microcirculation might be a causative mechanism of Takotsubo cardiomyopathy.

Acute Disease↗
PubMed2003

[Efficacy of integrated backscatter imaging by acoustic densitometry for identifying ultrasonic tissue characterization of left ventricular thrombus: two case reports].

Echocardiography demonstrated a high echoic lesion(6 x 5 mm) in the apex of the left ventricle of a 72-year-old man(Case 1) and similar lesions(7 x 6 mm and 4 x 3 mm) in the apex of the left ventricle of a 60-year-old man(Case 2). The amplitude of cyclic variation of integrated backscattering of the high echoic lesions was measured by acoustic densitometry to be lower than that of the myocardium in Case 1, but similar to that of the myocardium in Case 2. Contrast echocardiography detected the perfusion defect of the high echoic lesion in Case 1, but not in Case 2 in the apical four-chamber view. These findings showed that the high echoic lesion indicated thrombus in Case 1, and papillary muscle in Case 2. Measurement of the amplitude of the time intensity curve with contrast echocardiography showed that the amplitude of thrombus was different from that of myocardium. This method is useful for ultrasonic tissue characterization.

Aged↗
PubMed2003

[Nephrogenic adenoma of the bladder treated with cystectomy to control severe irritative symptoms: a case report].

A 68-year-old man was admitted to our hospital for treatment of a recurrent bladder tumor. Histological examination performed after transurethral resection of the bladder tumor (TUR-BT) revealed a nephrogenic adenoma without any evidence of malignancy. After TUR-BT, total cystectomy was performed to control severe irritative symptoms. Prolonged cystitis and intravesical pirarubicin therapy after TUR-BT may have played an etiological role. Our case is the 25th case of nephrogenic adenoma of the bladder reported in the Japanese literature.

Adenoma↗
PubMed2002

[Questionnaire survey on sexual behavior of Japanese males infected with sexually transmitted diseases].

In Japan, there has been a rapid increase in recent years in the incidence of sexually transmitted diseases (STD), particularly in teenagers and people in their twenties. To determine the factors causing this increase in STD, we carried out a questionnaire survey on the sexual behavior of Japanese males. The subjects were 248 male patients who were treated at our outpatient clinic. The results of the survey showed that 1) about 70% of the male patients were infected through sexual intercourse with partners who were not paid for such services; 2) the average number of partners in the past year was 5.8, and the average number of partners was highest for the teenage group and decreased with age; 3) only 29 (12.4%) of the 234 males used condoms; and 4) 192 (82.0%) of the 234 males received oral sex. The results of the survey suggest that a large "sexual network" has been formed among young Japanese people and that a large percentage of young Japanese people are engaged in unprotected sex.

Adolescent↗
PubMed2002

[A case of "Takotsubo" cardiomyopathy observed with myocardial scintigraphy from the acute phase].

A 57-year-old woman was emergently admitted to our hospital because of chest oppression. On examination, blood pressure was 174/96 mmHg, pulse rate was 90/min and coarse crackle and third heart sound were audible. On laboratory data, the levels of LDH and CPK-MB were mildly elevated. Electrocardiogram (ECG) demonstrated elevation of the ST segment in leads I, aVL and V2-V5. 99mTc-tetrofosmin myocardial SPECT (TF) showed severely reduced uptake in the apex and anterior wall. Emergent coronary angiography (CAG) did not show any stenotic lesion. Left ventriculography (LVG), however, demonstrated akinesis of the apex, anterior, and inferior walls, and basal hyperkinesis. On the second hospital day, ECG demonstrated inverted T wave in leads I, aVL and V2-V5. 123I-BMIPP myocardial SPECT (BMIPP) and 123I-MIBG myocardial SPECT (MIBG) were performed on the second and fourth hospital days, respectively. These cardiac images showed severely reduced uptake equally. TF, BMIPP, and MIBG were re-examined on the eighth, tenth, and twelfth hospital days, respectively. MIBG, BMIPP, and TF showed reduced uptake in order of severity. On the fourteenth hospital day, CAG and LVG were re-examined. Coronary vasospasm provocation test was negative using ergonovine and acetylcholine, and LVG did not demonstrated any sign of asynergy. We considered that this case was "Takotsubo" cardiomyopathy and might be caused by microvascular spasm.

3-Iodobenzylguanidine↗