Surrogate markers are not 'one-size-fits-all'
Blood glucose is a good marker of diabetes. Not so with bone density as a marker of osteoporosis.
B.F. MANDELL

ERCP: Current uses and less-invasive options
Because ERCP can cause pancreatitis, newer options have replaced it for patients who have a low pretest probability of bile duct stones.
J.A. DUMOT

When do common symptoms indicate normal pressure hydrocephalus?
The symptoms of normal pressure hydrocephalus--abnormal gait, cognitive impairment, and urinary dysfunction--are common in elderly patients. How can this rare condition be distinguished from other diseases, and how can it be determined if a patient is likely to benefit from a ventriculoperitoneal shunt?
R. FACTORA

A tropical souvenir not worth picking up
The patient recently returned from a beach resort in Jamaica and now has a painful rash on her foot. What is it?
S. PRAYAGA and G.B. MANNEPULI

Heel pain: Diagnosis and treatment, step by step
The differential diagnosis of heel pain is broad and can be overwhelming if a systematic approach is not used.
J. ALVAREZ-NEMEGYEI and J.J. CANOSO

Diagnosing primary osteoporosis: It's more than a T score
In the end, the physician--not the machine--diagnoses osteoporosis.
A.A. LICATA

Exenatide and pramlintide: New glucose-lowering agents for treating diabetes mellitus
Insulin is not the only hormone that regulates plasma glucose levels. Two new drugs based on native hormones became available in 2005.
B.J. HOOGWERF

Addressing the challenges of cardiorenal syndrome
Cardiorenal syndrome--the spiral of worsening heart falure and kidney failure--is only beginning to receive the attention it deserves.
C. GEISBERG and J. BUTLER

Cephalosporins are often safe in penicillin-allergic patients

Saw palmetto is not effective for benign prostatic hyperplasia

Statins are equivalent for cardiovascular disease prevention

BNP testing is beneficial in patients with heart failure plus pulmonary disease

Correction
Primary hyperparathyroidism (December 2005)