An incidental case of breast cysticercosis associated with fibroadenoma.

It is unusual for cysticercosis to occur in the substance of the breast. Only a few cases have been described in the literature. We report a case of cysticercosis perched on fibroadenoma of breast found on surgical excision in a 35 year old Nepali woman. The patient had no discernible evidence of cysticercosis in the other organs.

Quality assurance programme in haematology at a teaching hospital in the eastern region of Nepal.

Quality assurance in haematology laboratory is intended to ensure the reliability of the laboratory tests. A quality assurance programme has two main aspects, namely, internal quality control and external quality assessment. A two year experience of quality assurance in haematology laboratory at B.P. Koirala Institute of Health Sciences, Nepal, is presented here. As a part of internal quality control, test results in the laboratory were scrutinized before release on a daily basis. Inconsistent result were checked for the given values with control material. In addition, the laboratory is a participant of the 'External Haematology Quality Assurance Programme' conducted by WHO regional reference centre at AIIMS, New Delhi, India. Variations related to errors in manual and autopipetting, calibration and inter-observer differences have been noted from time to time and rectified. The programme has helped us to deliver quality service in haematology laboratory at BPKIHS.

Isolation & cryo-preservation of human foetal articular chondrocytes.

An attempt to determine the ideal temperature and duration of storage of human foetal chondrocytes yielded highly cellular preparations with no alteration in morphology or loss of viability. Initial digestion with activated papain was followed by incubation in 0.5 per cent collagenase. Trypan blue exclusion test revealed a viability count of 95-99 per cent and radioactive thymidine uptake a corresponding labelling index. On TEM no subcellular damage was evident. The isolated viable chondrocytes were further banked at varying temperatures of +4 degrees, -4 degrees, -30 degrees, -79 degrees and -196 degrees C, in Eagles MEM with 10 per cent dimethyl sulfoxide. Post storage morphology and viability of these cells, thawed after durations of 20 h, 1 wk, 1, 2, 3, 4 and 6 months, were compared with prestorage readings in an attempt to define the ideal temperature for banking. Storage in liquid nitrogen at -196 degrees C demonstrated excellent preservation even at the end of six months with minimal subcellular change. Electron microscopy and labelling index were found to be superior to Trypan blue exclusion test in assessing the stored chondrocytes for retention of their functions.