Biomedical subjects
J Hayman
Publications and source records attributed to J Hayman.
Herpes virus serology in vasectomy patients.
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Carcinoma of the urachus.
Two cases of carcinoma of the urachus are reported, 1 involving the dome of the bladder and 1 occurring beneath the peritoneum of the anterior abdominal wall below the umbilicus at the apex of an elongated bladder. Both patients died shortly after diagnosis, a fact which emphasizes the poor prognosis of this group of patients. The poor prognosis and need for more than local resection of the tumour may not be widely appreciated. Tumours arising above the bladder have a different mode of presentation from those arising within the bladder wall. Bladder wall tumours are most frequently mucus-secreting adenocarcinomas; tumours arising above the bladder may be more variable in their histological type, and include squamous and undifferentiated cancer. A simple classification into vesicle and supra-vesical tumours is proposed, to replace an early classification into 7 groups.
Angiosarcoma developing around a foreign body.
An 86-year-old World War I veteran developed an angiosarcoma at the site of a war wound. The tumour developed in relation to one of several metal grenade fragments. The tumour cells have been shown to contain blood coagulation factor VIII antigen and have features of endothelial cells on electron microscopy. The patient is claimed to be the last soldier dying of wounds sustained during that war, and to have the longest disease-free interval between injury and the onset of complications.
Registration examination: content validity study.
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Dietetic performance evaluation: establishment of validity and reliability.
Performance evaluation as conducted among a number of raters using several evaluation tools requires the qualities of content validity and interrater reliability to be fair and effective. A procedural model was tested and implemented by faculty and students in the Coordinated Undergraduate Program (CUP) at the University of Tennessee, Knoxville. A checklist for evaluation of employee counseling techniques achieved an intraclass correlation of 0.72 when used by clinical instructors in a series of workshops. The procedure included development of a form, its use in a standardized situation, discussion, calculation of intraclass correlation, and review. The model is suggested for implementation in any program from which established validity and reliability in evaluation are desired.
Games--a teaching strategy.
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Beyond the Barcoo--probable human tropical cyanobacterial poisoning in outback Australia.
AIM: To determine the cause of a disease known variously as "Barcoo fever, Barcoo spews, Barcoo sickness", or simply "the Barcoo", once prevalent in outback northern and central Australia. METHOD: Comparison of the recorded symptoms with those of known infectious diseases and gastrointestinal illness; consideration of the epidemiology, including times and places of occurrence and the population affected. RESULT: The disease had features of a toxic rather than an infectious illness and had the characteristics of poisoning by toxic cyanobacteria (blue-green algae). In particular the symptoms were similar to those shown to be due to the hepatotoxin of the tropical cyanobacterium Cylindrospermopsis raciborskii (Woloszynska). CONCLUSION: Poisoning by cyanobacterial toxins was once widespread in outback northern Australia and toxic cyanobacteria must still be present in many areas. Although not reported and probably not diagnosed as such, the disease still occurs in mild form. Widespread illness does not occur but individuals still experience symptoms similar to those described a century ago. Precautions are necessary to prevent algal contamination or proliferation in domestic or communal water supplies.