Double trouble: Should double embryo transfer be banned?

Double vision: double trouble.

To cite: Kesav P, Muthu V, Khurana D. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2014207347 DESCRIPTION A 43-year-old smoker presented with painless binocular diplopia and numbness in the left frontotemporal region of 4 weeks duration. Physical examination revealed non-tender bony swelling in the left zygomaticotemporal region with posterior cervical lymphade...

Double reflux: double trouble

Are double translocations double trouble?

Double translocation heterozygotes are rare, but need not necessarily pose more of a counselling problem than single reciprocal translocation heterozygotes. Nine cases of double translocation are presented, together with a review of the few reports published to date. An attempt is made to provide simple counselling guidelines in the assessment of the risk of producing a liveborn abnormal child....

Should selecting saviour siblings be banned?

By using tissue typing in conjunction with preimplantation genetic diagnosis doctors are able to pick a human embryo for implantation which, if all goes well, will become a "saviour sibling", a brother or sister capable of donating life-saving tissue to an existing child. This paper addresses the question of whether this form of selection should be banned and concludes that it should not. Three...

Should DDT be banned by international treaty?

The insecticide DDT has been an effective and affordable means of malaria control in many countries, but pressure for its use to be banned is mounting. Here, Chris Curtis and Jo Lines take a critical look at evidence that links house spraying by DDT with harm to the environment and human health, and stress the need for resources for alternatives to DDT to be made available to countries that wou...