November 22nd 2024
Your daily dose of the clinical news you may have missed.
Hepatic and Splenic Infarction in Systemic Lupus Erythematosus
September 14th 2005Systemic lupus erythematosus (SLE) was diagnosed in an 18-year-old man who presented with polyarthritis, fever, hypoxia, fatigue, anemia, neutropenia, and abnormal urinary sediment. A renal biopsy showed diffuse mesangial proliferative glomerulonephritis (World Health Organization class II). Serologic tests were positive for fluorescent antinuclear antibody (FANA), SS-A, SS-B, anti-Sm and anti-dsDNA antibodies, and rheumatoid factor; a direct Coombs' test result was positive as well.
The keys to diagnosing interstitial lung disease: Part 1
September 1st 2005Abstract: The idiopathic interstitial pneumonias (IIPs) are the most commonly diagnosed forms of interstitial lung disease. These diseases represent specific clinicopathologic entities characterized by varying degrees of lung parenchymal inflammation and fibrosis. While most patients present with chronic dyspnea and have evidence of restriction on pulmonary function testing, certain findings can help differentiate among the IIPs. For example, patients with idiopathic pulmonary fibrosis (IPF)--the most common IIP--commonly present in the sixth or seventh decade of life, while those with desquamative interstitial pneumonia or respiratory bronchiolitis with interstitial lung disease typically present in the third or fourth decade of life and have a history of smoking. IPF is characterized by usual interstitial pneumonia (UIP) on lung biopsy; a UIP pattern can also be identified by high-resolution CT. (J Respir Dis. 2005;26(9):372-378)
Case In Point: Exfoliative dermatitis: A presenting sign of lung cancer
September 1st 2005A 53-year-old man presented with a 3-day history of bilateral pain in the lower extremities. He also had a 3-month history of thickening and desquamation of skin, with associated itching, and a 5-lb (2.27-kg) weight loss. The skin changes initially appeared on the hands and subsequently became generalized.
Refractory Gastroesophageal Reflux Disease:
September 1st 2005Although proton pump inhibitors (PPIs) are highly effective, clinical failure in patients with gastroesophageal reflux disease (GERD) is seen regularly--not only in GI clinics but also in primary care offices. In fact, the prevalence of failure with PPIs has increased in proportion to the expanding indications for their use.
Chest Film Clinic: What caused progressive dyspneain this patient with chronic asthma?
September 1st 2005A 51-year-old man with a 20-year history of asthma and seasonal allergies presented with low-grade fever, progressive dyspnea on exertion, and wheezing that had persisted for 2 weeks. Four days earlier, he had been seen by his primary care physician and had started levofloxacin therapy. However, his respiratory symptoms had worsened, warranting hospitalization. He also reported pain in the abdomen and left flank and pain and swelling in the right metacarpophalangeal and right shoulder joints.
Extrapulmonary tuberculosis, part 1: Pleural and lymph node disease
August 1st 2005Abstract: Pleural tuberculosis and lymph node involvement are the most common extrapulmonary manifestations of tuberculosis. Most patients with pleural involvement complain of pleuritic chest pain, nonproductive cough, and dyspnea. The pleural effusion is usually unilateral and small to moderate in size. The diagnosis depends on the demonstration of acid-fast bacilli in pleural fluid or biopsy specimens, or the presence of caseous granulomas in the pleura. The gold standard for the diagnosis of lymph node tuberculosis is the identification of mycobacteria in smears on fine-needle aspiration cytopathology, histopathology, or mycobacterial culture. On ultrasonography and CT, the lymph nodes show enlargement with hypoechoic/hypodense areas that demonstrate central necrosis and peripheral rim enhancement or calcification. Treatment involves the combination of 4 antituberculosis drugs for 2 months, followed by 2-drug therapy for 4 months. (J Respir Dis. 2005;26(8):326-332)
Platypnea-Orthodeoxia Syndrome
August 1st 2005A 62-year-old woman with a 25-year history of dyspnea was hospitalized because of hypoxemia. The dyspnea had become more severe during the past few years; it was worse in the standing position, was not exacerbated by walking, and was immediately relieved on lying down. She had no seasonal variation or environmental trigger of the dyspnea.
Emerging Treatments for Rheumatoid Arthritis:
August 1st 2005ABSTRACT: Early treatment with disease-modifying anti-rheumatic drugs (DMARDs)--alone or in combination-- can prevent joint damage and minimize disability. Until recently, the DMARDs used predominantly in patients with rheumatoid arthritis had been methotrexate, sulfasalazine, and hydoxychloroquine. Older DMARDs such as gold, d-penicillamine, and azathioprine have fallen out of favor because of their long- term toxicities or modest benefit. Six newer DMARDs--leflunomide, etanercept, infliximab, adalimumab, rituximab, and anakinra--have greatly expanded the current treatment options.
Case In Point: A case of bilateral hilar lymphadenopathy
July 1st 2005The authors describe a rare cause of diffuse thoracic lymphadenopathy--Cogan syndrome. This case was remarkable for the temporal development of extensive lymphadenopathy independent of other hallmark symptoms and signs of this syndrome. In the appropriate clinical setting, Cogan syndrome should be considered in the differential diagnosis of thoracic lymphadenopathy.
Acanthosis Nigricans in an Adolescent With Metabolic Syndrome
July 1st 2005During a routine annual checkup, a 5-ft 8-in, 94.5-kg (210-lb) 13-year-old girl was noted to have a hyperpigmented "dirty" lesion on the back of her neck. The girl's parents were also obese. Her mother had type 2 diabetes mellitus.
Daytime Sleepiness: A Practical Approach to Assessment
June 1st 2005Abstract: Although excessive daytime sleepiness is most often simply the result of inadequate sleep, other causes must be considered as well. Common causes of daytime sleepiness include obstructive sleep apnea/hypopnea syndrome (OSAHS) and medication side effects. The differential diagnosis also includes narcolepsy and restless legs syndrome (RLS). In many cases, the answers to a few simple questions can provide the necessary clues to the diagnosis. Loud snoring is associated with OSAHS, while sudden muscle weakness triggered by intense emotion is consistent with narcolepsy. Referral for sleep evaluation is indicated to evaluate for OSAHS, narcolepsy, RLS, and idiopathic hypersomnia. Methods of measuring daytime sleepiness include the Multiple Sleep Latency Test and the Epworth Sleepiness Scale. (J Respir Dis. 2005;26(6):253-259)
How to handle the difficult airway, part 1
June 1st 2005Abstract: A number of scoring systems can be used to help predict difficult intubations. The Mallampati system, for example, can be useful in assessing patients before elective surgery, but it is less practical in emergent situations. Clinical features that suggest a potentially problematic airway include relatively long upper incisors, prominent overbite, narrow palate, edematous mandibular space, thick neck, and limited flexion of the neck. The most effective and rapid way of securing definitive airway management remains direct laryngoscopy with placement of an endotracheal tube (ETT). The ETT/stylet assembly of the light wand is best used when the patient can be successfully ventilated with a bag-valve mask device between intubation attempts. One of the most critical components of airway management is confirming that the ETT has been successfully placed in the trachea. (J Respir Dis. 2005;26(6):268-276)