Cavernous haemangioma in the Muscularis propria of the oesophagus and in the paraoesophageal tissue

This is a case report of a 45-year-old woman who presented herself in our hospital with increasing retrosternal tenderness to pressure, dysphagia, and symptoms of reflux oesophagitis. The clinical examination and laboratory results showed no pathological findings. Oesophagogastroduodenoscopy revealed a bluish-livid, bulging mass from 32-38 cm aborally. A malignancy could not be excluded by biopsies with histological work-up, endoscopical ultrasound, nor CT-scan. By thoraco-abdominal surgery, a 5 cm large vascularised tumour of the outer layers of the oesophagus and the paraoesophageal tissue was resected. After intrathoracic oesophago-gastrostomy the patient could be discharged 17 days after surgery without further symptoms. Histology showed a benign tumour which was classified as cavernous haemangioma. To our knowledge, this is the first case of a haemangioma which involves the paraoesophageal tissue and the muscularis propria. The few published case reports of cavernous haemangioma of the oesophagus describe only an involvement of the mucosa and submucosa.     

Fractionated total-body irradiation and high-dose etoposide as a preparatory regimen for bone marrow transplantation for 94 patients with chronic myelogenous leukemia in chronic phase

Ninety-four consecutive patients with chronic myelogenous leukemia in first clinical chronic phase, median age of 34.0 years (range, 6.8 to 52.4 years), with a histocompatible sibling donor, were treated with fractionated total body irradiation (1,320 cGy) and high-dose etoposide (60 mg/kg) followed by allogeneic bone marrow transplantation (BMT). The median time from diagnosis to BMT was 7.0 months (range, 2.3 to 72.0 months). Sixty patients were treated before BMT with hydroxyurea alone, four patients with busulfan alone, one patient with interferon alone, and the other 29 patients were treated with various combinations of these drugs. Cumulative probabilities of overall survival, event- free survival, and relapse at 5 years were 73%, 64%, and 14%, respectively. The median follow-up time for surviving patients was 38 months, ranging from 12 to 88 months. By stepwise Cox regression analysis, significant prognostic variables were age at transplant, acute graft-versus-host disease > or = grade II, cytomegalovirus- associated interstitial pneumonitis, and years from diagnosis to BMT.     

Success of laparoscopic fundoplication for gastroesophageal reflux disease

Background. We explored the efficacy of laparoscopic fundoplication (LF) in patients with uncomplicated, medically recalcitrant pathologic gastroesophageal reflux disease (GERD) for whom we previously would have recommended open surgical repair.

Methods. From January 1994 to January 1998, we performed LF on 150 patients (80 men and 70 women) with GERD recalcitrant to maximal medical therapy. No patient suffered from esophageal stricture or epithelial dysplasia; however 16% (24 of 150) had benign Barrett’s mucosa. Preoperative esophageal manometry and 24-hour pH testing were obtained in 93% (139 of 150) and 89% (134 of 150) of patients, respectively. Nissen LF (n = 123), Toupet LF (n = 26), or Dor LF (n = 1) were accomplished over a large (54 F) intraesophageal bougie. Preoperative (1 month) and postoperative (>6 month) symptom scoring were assessed on a 0 to 10 scale. Thirty-eight patients with a greater than 6-month postoperative period had manometry and pH studies performed.

Results. The laparoscopic approach was successful in 99% (148 of 150) of patients, and there has been no mortality. Operative time was 160 ± 59 minutes. Open conversion was required for 2 patients: because of difficulty with dissection owing to adhesions in 1 case and due to perforation in another. Reoperation was required for 5 patients (1 paraesophageal, 2 dysphagia, 2 recurrent reflux). Major postoperative complications involved stroke and pancreatitis in 1 patient each. Mean hospital stay was 2.6 ± 1.2 days, full activity resumed by 7 days. Postoperative esophageal pH testing among 38 patients tested more than 6 months after operation demonstrated normal esophageal acid exposure in all but 2. GERD symptoms were relieved at 1 month, 6 months, and after 1 year in 95% (128 of 135), 94% (99 of 105), and 93% (65 of 70) of patients, respectively.

Conclusions. Intermediate-term results with LF suggest this to be a reasonable approach to surgical management of medically recalcitrant uncomplicated GERD. Thoracic surgeons interested in GERD should become familiar with minimally invasive surgical approaches.     

分枝桿菌(Mycobacterium sp.M12)降解甾醇侧链的研究

分枝杆菌(Mycobacterium sp.M12)能将胆固醇,3β-乙酰氧基胆固醇,谷甾醇以及3β-乙酰氧基谷甾醇降解成△³-雄甾烯-3,17-二酮(4AD)及少量的△^1.4-雄甾烯-3,17-二酮(ADD)。4AD的收率分别为69%,70%,26%,22%。对该菌株降解胆固醇侧链的最适条件进行了研究。     

Selective damage to erythroblasts by 55-Fe

The low energy and short range of 55-Fe Auger electrons were utilized in mice to deliver lethal intracellular radiation to iron-incorporating erythropoietic precursors with minimal radiation damage to other bone marrow cells. The ensuing intramedullary, selective erythropoietic death was demonstrated by absolute and differential bone marrow cell counts and by decreased blood uptake of 59-Fe. The decreased number of colony-forming units in spleen colony assay and the decreased ability of tranplanted bone marrow to protect fatally irradiated mice shows that the bone marrow was partially depleted of pluripotent stem cells. These data are interpreted to indicate an increased pluripotent stem cell utilization in response to increased demand for differentiation of stem cells along the erythropoietic pathway.     

Determinants of acquisition of MR imaging units in an era of prospective payment

A survey was undertaken to examine the impact of Medicare's Prospective Payment System (PPS) and other recent changes in the health care environment on providers' decisions regarding acquisition of high-cost technologic equipment. The survey group included 199 hospitals and freestanding imaging centers known to have acquired magnetic resonance (MR) imaging units, as well as a random sample of 400 hospitals whose acquisition decisions were unknown to the authors. Fifty-eight percent of the known adopters and 61% of the randomly selected hospitals responded to the survey. Nonadopters' decisions were dominated by economic considerations, including the high cost of MR imagers and concerns about Medicare's reimbursement policies. Competition and a desire to provide the highest quality of care are counterbalancing the retardant effects of PPS, however, and are stimulating widespread diffusion of MR imagers.