ABSTRACT
Spontaneous hemorrhage caused by erosion of major arteries by a pseudocyst of the pancreas is a rare condition. We have encountered three cases, one involving the abdominal aorta and two the superior pancreaticoduodenal artery. It is important to keep in mind that pseudocyst of the pancreas may cause massive gastrointestinal or intraabdominal bleeding. Operative treatment offers a better chance of survival than more conservative management.
Subject(s)
Hemoperitoneum/etiology , Pancreatic Cyst/complications , Pancreatic Diseases/etiology , Retroperitoneal Space , Angiography , Aorta, Abdominal , Aortic Diseases/complications , Arteritis/complications , Duodenum/blood supply , Female , Hemoperitoneum/diagnostic imaging , Hemoperitoneum/surgery , Humans , Male , Middle Aged , Pancreas/blood supply , Pancreatic Cyst/diagnosis , Pancreatic Cyst/surgery , Rupture, SpontaneousABSTRACT
The effect of three electric current levels (3 mamp, 500 micronamp, and 960 mmicronamp) on the growth of A-Mel-4 tumor was evaluated in hamsters as a mode of therapy. Direct current (dc) was applied for one hour a day from the third to sixth posttumor implant day by the introduction of a shielded point electrode directly into the tumor site. Tumor growth was inhibited, and metastases were reduced in the exposed animals. The higher dl levels produced necrosis in the tumors, and in several animals, the implantation site tumor was completely destroyed. These effects were most pronounced with the positive electrode.
Subject(s)
Electric Stimulation Therapy , Melanoma/therapy , Skin Neoplasms/therapy , Animals , Cricetinae , Evaluation Studies as Topic , Neoplasm Metastasis , Neoplasm Transplantation , Neoplasms, Experimental/therapyABSTRACT
Few laboratories determine their normal values, because of the work involved. This study attempted to see whether a group of laboratories, each contributing a portion of the samples, could pool their information to yield data applicable to the whole group. Each of 20 VA Hospital laboratories obtained approximately 20 fasting early morning specimens from healthy men, aged 20-29 years, during a four-week period. Routine chemistry examinations (16) were performed on Technicon AutoAnalyzers (12/60, 6/60, and AAII), and model S Coulter Counters were used for five hematology tests (381 values for each constituent). Within-day, day-to-day, and interlaboratory variance were determined in parallel-method variability studies. The data showed: (1) it is valid to pool normal values from different laboratories when non-random variables have been eliminated; (2) non-random variables can be identified by increased interlaboratory variance, whether differences such as methods and equipment are obvious or not; (3) normal values so derived agree well with those from large series performed in single laboratories.
