Cases Demonstrated at the M.R.C.P. Class

Report of Cases Demonstrated at the F.R.C.S. Class.

Case I. Swelling in the Neck. Mrs. W. aged 28 complained of a lump at the right angle of the jaw, the size of a hen egg. She had had the swelling for several years, during which it had varied in size and had been subject to attacks of inflammation. The diagnosis of a suppurating tubercular gland had been formed. Six months ago she was admitted to hospital during an acute attack when she was con...

Book Review: Picture Tests and Short Cases for the MRCP.

When writing can change your life, when writing can enrich you by offering much money, why don't you try it? Are you still very confused of where getting the ideas? Do you still have no idea with what you are going to write? Now, you will need reading. A good writer is a good reader at once. You can define how you write depending on what books to read. This picture tests and short cases for the...

MRCP in the neonates

Pitfalls of MRCP

MR cholangiopancreatography (MRCP) is widely used in the evaluation of pancreatobiliary disorders. As with all MRI techniques, there are pitfalls that may lead to incorrect interpretation. This article is summarized common pitfalls of MRCP, emphasizing at biliary system, that need to be aware in order to avoid the misinterpretation. Pitfalls are divided into 2 categories; false-positive and fal...

Special Cases of the Class Number Formula

Proof. Using that (Z/p)× is a cyclic group of order p − 1 (i.e. the existence of primitive roots), we see that there is a square root of −1 (that is, a non-trivial fourth root of 1) in (Z/p)× if and only if p ≡ 1 mod 4. Suppose now that p ≡ −1 mod 4, and suppose that α and β are two elements of Z[i] such that p|αβ. Then p = N(p)|N(α)N(β), and so (after relabelling if necessary) we may assume th...