Pesticides are unique environmental contaminants that are specifically introduced into the environment to control pests, often by killing them. Although pesticide application serves many important purposes, including protection against crop loss and…
Neurocysticercosis is a significant public health issue within the United States. Although cysticercosis was once thought to have been eradicated in the United States, the number of documented cases is rising and immigrants from endemic areas are at…
The cytogenetic findings in pleuropulmonary blastoma (PPB) have not been widely studied and reported and are of interest in view of the implications that PPB has for additional tumors in the patient and the patient's relatives. Using standard tumor…
Characterization of the nature and skeletal distribution of gout was accomplished in a Chamoru (Chamorros) population with predilection to the disease. Uniform excavation by the gouty diathesis produces a punched-out appearance to these predominantly…
The opportunity to examine the defleshed skeleton of an individual diagnosed in life (Hamann-Todd collection, individual 2036) afforded a unique opportunity to demonstrate the bone damage characteristic of at least one form of juvenile rheumatoid…
Perspectives are in the eye of the beholder and are expanded with increased scrutiny (e.g., magnification). The term porosity' for macroscopically or radiologically identifiable discontinuity in bone is so variably applied as to be incomprehensible…
As the study of bone disease in recent and fossil amphibians and reptiles has evolved from observational speculation to analysis of testable hypotheses, so too has recognition of its contribution to our understanding of diseases and organisms. Given…
Examination of preserved skin from a duckbill dinosaur revealed disruption of the normal scale pattern and replacement by granulation tissue. Wrinkles radiating outward from the scar document wound contraction similar to that seen in modern injuries.…
Two unusual bumps occur on the internal surface of a rib of the marine reptile Prognathodon saturator from the Upper Cretaceous (Maastrichtian) of Maastricht, The Netherlands. These bumps are interpreted as stress fractures, possibly related to…
Treatment of serious infections caused by gram-negative bacilli with beta-lactam antimicrobial agents can induce Class I beta-lactamase production. This phenomenon can result in resistant microorganisms, and has been postulated to be a cause of…
We studied the nonspecific nature of the histologic findings in the gastric antral vascular ectasia (GAVE) syndrome by using a morphometric comparison with common gastric lesions including hyperplastic polyps and gastritis. Five clinicopathologically…
Context Participation in proficiency testing is required under the Clinical Laboratory Improvement Amendments of 1988. Although the primary purpose of this testing is evaluation of current laboratory performance, a major secondary benefit of such…
Polypoid lesions composed of gastric mucosa in the jejunum are rare. The vast majority of cases of ectopic gastric tissue occur in the duodenum. In this article, we present a case of heterotopic gastric mucosa forming a giant polyp in the mid…
Objective.-After identifying a metastatic glycogen-rich balloon cell malignant melanoma, originally thought to be a benign clear cell tumor of the lung, we investigated the extent of positive reactions, or "positivity," of malignant melanoma to…
Background.-Extramammary Paget's disease most commonly occurs on the female external genitalia and rarely occurs in the perianal region and male external genitalia. We present the clinical and pathologic features of 5 cases of perianal Paget's…
The osseous appearance, skeletal distribution, and distinguishing features of calcium pyrophosphate deposition disease (CPPD) were delineated in a population of 2906 contemporary defleshed skeletons. The limitations of routine x-ray and clinical…
Calcium pyrophosphate deposition disease (CPPD), a form of crystalline arthritis, has a unique distribution in the Early to Middle Archaic Periods (3000 to 8000 years before the present) of North America, contrasting with the generalized geographic…
Spondyloarthropathy was observed in 25 (2.8%) of 895 preserved canid museum specimens and was catalogued by species. The associated skeletal alterations in canids are indistinguishable grossly and physiologically from those in humans with…
Only two cases of beta(2)-microglobulin amyloid tumors involving the buttocks have been reported in the world literature. We report a case of bilateral buttock amyloid tumors with associated carpal tunnel syndrome and pathologic fracture involving…
A 67-year-old woman had fever, myalgias, progressive weakness, and respiratory insufficiency. In 9 days, flaccid areflexic quadriparesis and bulbar palsy developed. She died 26 days after the onset of her illness. Serum and cerebrospinal fluid…
A 3-year-old girl with rhizomelic chondrodysplasia punctata (RCDP) had severe micrencephaly but a normal gyral pattern, neuronal density, and cortical cytoarchitecture. The white matter was diffusely decreased in mass but normally myelinated. There…
