A case of transient bioprosthetic valve regurgitation and hemolysis devoloping early after surgery using Carpentier-Edwards valve.

The Carpentier-Edwards pericardial bioprosthesis has been markedly improved in the long-term results and valve-related complications including valve dysfunction, compared to the previous generation bioprosthesis. We report a patient in whom transient prosthetic valve regurgitation and hemolysis occurred early after mitral valve replacement using a Carpentier-Edwards pericardial bioprosthesis and were resolved by preservative therapy. The patient was a 77-year-old female diagnosed with severe mitral valve stenosis and insufficiency. She underwent mitral valve replacement with a Carpentier-Edwards pericardial bioprosthesis. Opening and closing of the three leaflets looked good on intraoperative transesophageal echocardiography (TEE). The only prosthetic valve regurgitation was evident at the central region where the leaflets form coaptation, and no abnormal findings were seen. Serum lactate dehydrogenase (LDH) was decreased to 405 U/l after surgery. However, LDH again began to increase on the 3rd day after surgery and it increased to 1,830 U/l on the 14th day after surgery. Hemolytic urine was detected on 10th day after surgery. PVL was not detected, but moderate abnormal regurgitation from the outside of the stent pocket was detected on TEE. Revision of valve replacement was considered, but LDH thereafter to 393 U/l on 41st day after surgery. The TEE was repeated, and only a trace of central jet was detected without abnormal regurgitation, unlike the previous examination. The patient did not develop any complications thereafter and was discharged on 47th day after surgery. LDH was nearly normal at the time of discharge.     

Prevalence of Adenomas and Carcinomas in the Ileal Pouch After Proctocolectomy in Patients with Familial Adenomatous Polyposis

Purpose  Restorative proctocolectomy has become the most common surgical option for patients with familial adenomatous polyposis (FAP). However, adenomas may develop in the ileal pouch mucosa over time, and even carcinoma in the pouch has been reported. Our aim was to evaluate the prevalence, nature, and etiology of ileal pouch and nonpouch adenomas and carcinoma in patients with FAP. Patients and methods  This was a retrospective study of 31 FAP patients with Kock’s continent ileostomy (Kock; n = 8), ileorectal anastomosis (IRA; n = 7), and ileal pouch–anal anastomosis (IPAA) (n = 16). All patients were followed with a standardized protocol including chromoendoscopy and biopsies of visible polyps in the ileal pouch and nonpouch mucosa. Results  Sixteen of 24 pouch patients (Kock and IPAA) developed adenomas in the ileal pouch mucosa, and all patients with IRA developed adenomas in the rectal mucosa. The prevalence of ileal adenomas was significantly higher in pouch patients than in IRA patients (P = 0.002). Only one patient with Kock showed adenoma in the prepouch area. Two cases of adenocarcinomas and one case of advanced adenoma were found in the ileal pouch mucosa. Conclusion  Our results show a high frequency of adenomas in the ileal pouch mucosa, with evolution into carcinoma in some patients. Regular endoscopic surveillance of the pouch is recommended at a frequency similar to that for the rectal mucosa after IRA in pouch patients with FAP.     

Lung cancer screening and its efficacy

The efficacy of lung cancer screening should not be evaluated by the survival rate of lung cancer patients but by lung cancer mortality in a certain population because the survival rate can be greatly affected by several types of bias. Randomized controlled trials that were conducted during the 1970s and 1980s in Europe and the United States failed to prove the efficacy of lung cancer screening in decreasing the mortality rate; but recently the results of case-control studies in Japan have revealed that undergoing currently available screening decreases the risk of lung cancer deaths by 30%–60%. A system is now being created in Japan whereby the guidelines regarding cancer screening will continue to be updated. The preliminary reports concerning lung cancer screening using thoracic computed tomography revealed that not only the detection rate of lung cancer but also the survival rate of detected lung cancer patients were surprisingly high. However, the presence of some potential bias in these studies cannot be ignored; therefore, it is still unknown whether there is actual efficacy. Several randomized controlled trials are presently in progress overseas, but the interim results were not favorable. A randomized controlled trial should therefore immediately be started in Japan as well.     

Annual Periodic Increases in Serum Carcinoembryonic Antigen Concurrent with Ground-Glass Opacity in the Lung: Report of a Case

A 63-year-old woman underwent a video-assisted thoracoscopic lobectomy for cancer of the right lung in 1999. The following year, a lesion with ground-glass opacity was found in the left lung, and pathological examination after a partial lung resection revealed atypical adenomatous hyperplasia with expression of carcinoembryonic antigen (CEA). During postoperative screening tests for tumor recurrence, there were periodic increases in the serum CEA level by twofold above the normal levels in 2002 and 2003. Clinical evaluations, including laboratory tests, radiographic imaging, and endoscopy examinations, showed no evidence of a CEA-producing tumor, except for a new ground-glass opacity in the left lung. To our knowledge, this is the first report of periodic increases in serum CEA levels in a patient with ground-glass opacity in the lung, not reflecting recurrence of the lung tumor.     

Thyroid carcinoma with extensive tumor thrombus in the atrium

To our knowledge, only a few cases of thyroid carcinoma with an extensive tumor thrombus in the atrium have been reported in literature. We describe a unique case of papillary carcinoma of the thyroid with extensive tumor thrombus in the atrium. A 74-year-old man consulted our hospital because of thyroid carcinoma with an extensive tumor thrombus in the atrium. Computed tomography (CT) revealed a 2-cm tumor with extensive continuous tumor thrombus in the left jugular vein, innominate vein, superior vena cava, and atrium. The tumor was resected to reduce the risk of sudden death from tumor embolism into the pulmonary arteries. Histologically, the diagnosis was papillary carcinoma of the thyroid. Thyroid carcinoma, especially papillary carcinoma, rarely develops a macroscopic tumor thrombus. Patients with an extensive tumor thrombus generally have poor prognoses and high mortality. This patient has been followed for 7 months after successful operation without recurrence.     

Indications of partial hepatectomy for transplantable hepatocellular carcinoma with compensated cirrhosis

BACKGROUND: The appropriate treatment strategy for transplantable hepatocellular carcinoma (HCC) patients with compensated cirrhosis remains controversial. METHODS: Surgical outcomes were reviewed in 136 cirrhotic patients with transplantable HCC who had undergone partial hepatectomy. Transplantable HCC was defined as that corresponding to Milan's criteria. RESULTS: The adverse prognostic factors for both survival and disease-free survival were histologic surgical margin of 5 mm or less, Child-Pugh B, and the presence of hepatitis C virus infection. The overall 5-year survival and disease-free survival rates of patients with 1 or none of the adverse prognostic factors were 73% and 33%, respectively, whereas those of patients with 2 or 3 adverse prognostic factors were 36% and 17%, respectively. CONCLUSIONS: Transplantable HCC patients with 2 or 3 adverse prognostic factors should be considered candidates for liver transplantation, whereas patients with only 1 or none of the adverse prognostic factors are good candidates for partial hepatectomy.     

Serum total acid phosphatase for monitoring the clinical course of giant cell tumors of bone--26 patients with 5 local recurrences

Background Giant cell tumor of bone (GCT) is a bone-destroying tumor that sometimes recurs locally after treatment. A recent study showed increased levels of serum total acid phosphatase (TACP).

Methods We assessed TACP in the serum of 26 patients with primary GCT, and in 5 of them who developed a local recurrence.

Results We found a correlation between TACP level in serum and tumor size. TACP levels that were elevated preoperatively in patients with GCT became normalized after surgery, but increased in 3 of the 5 patients with local recurrence.

Interpretation TACP could be used as a tumor marker for monitoring response to treatment of GCT.     

Follow-up for patients with obstructive sleep apnea syndrome using a portable recording device

A home screening device, LT-200, can record data on both breathing conditions and body positions during sleep for up to 3 consecutive days in patients with obstructive sleep apnea (OSAS). We investigated the usefulness of the LT-200 device for follow-up of OSAS. Eighteen patients (age 51.0 +/- 10.8 years, mean +/- SD) were enrolled in this study. Standard polysomnography (PSG) was performed on all patients. The number of apnea/hypopnea episodes per hour (apnea/hypopnea index: AHI), the total time that nocturnal oxygen saturation was < 90% (oxygen desaturation time: ODT), and the minimum oxygen saturation during sleep (lowest Spo2) were calculated. We used the LT-200 and PSG to evaluate any improvement in the data obtained after auto-continuous positive airway pressure (auto-CPAP) therapy. AHI was also measured using the LT-200 in three sleep positions to evaluate the efficacy of the lateral position. AHI, ODT, and lowest Spo2 values did not differ significantly between the PSG and LT-200 recordings on the control and therapy nights. The LT-200 recordings showed that AHI, ODT, and lowest Spo2 tended to be better on the second night of auto-CPAP therapy than on the first. AHI was significantly lower in the right and left lateral sleep positions than that in the supine position. Our findings suggest that since the LT-200 device provides important information about the severity of OSAS, the efficacy of auto-CPAP therapy, and body position under unattended conditions in the home. It may prove to be a useful tool for following up patients.