Authors


Sirisak Chanprasert, MD

Latest:

Lhermitte-Duclos Disease

Lhermitte-Duclos disease is a rare, slow-growing, benign lesion of the cerebellum and is considered a hamartomatous tumor of the cerebellar cortex.


Siva K. Talluri, MD

Latest:

Splenic Infarction

A 53-year-old woman presented with sudden onset of left upper quadrant abdominal pain. She had a history of atrial fibrillation, hypertension, and congestive heart failure.


Skeptical Scalpel MD

Latest:

Many Physicians Ignore This Rule

It is often easier to ignore the rule about having a qualified medical interpreter in the room for non-English speaking patients. What do you do?


Smitha Daka, MD

Latest:

Pasteurella Pneumonia Associated With Cutaneous Trauma

Community-acquired pneumonia is a frequent cause ofhospital admission in adults. It usually results from infectionwith pathogens such as Streptococcus pneumoniae, Haemophilusinfluenzae, Mycoplasma, and Chlamydia, among others. In a fewcases, pneumonia develops from infection with unusualpathogens, such as Pasteurella multocida, a gram-negativeorganism commonly found in the mouths of cats and dogs.We report a case of P multocida pneumonia associated with skintrauma caused by cat scratches in a woman with a history ofchronic obstructive pulmonary disease. [Infect Med. 2008;25:487-489]


Sonia Arunabh, MD

Latest:

Wheezing in a 52-Year-Old Woman With a History of Colon Cancer

A 52-year-old woman was admitted tothe hospital with progressive shortnessof breath of 2 days’ duration. Bronchialasthma had been diagnosed 6 monthsearlier; inhaled corticosteroids, bronchodilators,and leukotriene antagonistswere prescribed. Despite aggressivetreatment, the patient’s dyspneaand wheezing worsened.


Sophia Archuleta, MD

Latest:

Clinical Challenge

Herpes zoster occurs in 10% to 20% of the general population as a result of reactivation of the varicella-zoster virus (VZV) and is generally benign. It occurs more frequently in persons with cellular immunodeficiency and older age. The association between herpes zoster and HIV was confirmed early in the course of the HIV epidemic by numerous studies. Zoster was noted to precede AIDS in high-risk groups. Both the incidence and complication rate of herpes zoster are increased in HIVinfected patients.


Spencer Nadolsky, DO

Latest:

Lifestyle Medicine: AHA's Statement Calling for Lifestyle Counseling Training

Patients take lifestyle recommendations seriously, but not many physicians offer them. Why not? Do you?


Spiro Demetis, MD

Latest:

Benzocaine-induced methemoglobinemia in bronchoscopy

Benzocaine-induced methemoglobinemia has been a well-documented illness that is usually simple to cure but can be life-threatening if not recognized. As the use of "scope" procedures becomes more commonplace, the early recognition of hypoxemia resulting from methemoglobinemia is essential. The authors report a case of benzocaine-related methemoglobinemia following bronchoscopy.


Spyridon Tzivelekis, MSc

Latest:

Economic Burden Associated With Parkinson Disease

The objective of this study was to estimate the annual cost burden of Parkinson disease (PD) in the United States. Resource use and cost profiles were developed using all-payer statewide hospital discharge data from 6 states; emergency department visit, long-term–care, and national survey data; fee schedules; and published study findings. (Average direct and indirect costs per patient were calculated in 2007 US dollars.) The annual cost per patient was $21,626 (direct cost: $12,491). When applied to the US PD population (N = 500,000), the annual average cost was approximately $10.78 billion (direct costs, $6.22 billion; indirect costs, $4.56 billion). PD has substantial economic consequences for patients and their families, insurers, and society. (Drug Benefit Trends. 2009;21:179-190)


Spyros Kokolis, MD

Latest:

Takotsubo Cardiomyopathy in a Man With a Gunshot Wound

A 48-year-old African American man with no significant medical history sustained a gunshot wound to the face and shoulder.


Sreekanth Vemulapalli, MD

Latest:

Heart Disease and Syncope

Syncope is defined as a sudden, brief loss of consciousness and postural tone followed by spontaneous complete recovery. It accounts for 3% of emergency department visits and 1% of hospital admissions.


Sreeram Ramagopalan, PhD

Latest:

Sex Ratio of Multiple Sclerosis

The worldwide sex ratio of MS has been substantially changing over the last century. Environmental factor/s appear to be at work in a sex-specific manner.


Sridhar Neralla, DO

Latest:

The keys to diagnosing interstitial lung disease: Part 3

Abstract: Important components of the workup for interstitial lung disease (ILD) include the history and physical examination, chest radiography, high-resolution CT (HRCT), pulmonary function testing and, in some cases, bronchoalveolar lavage (BAL) and/or biopsy. Pulmonary function tests usually show a restrictive ventilatory impairment. However, some patients have a mixed restrictive/obstructive pattern; in fact, almost 50% of patients with sarcoidosis have airflow obstruction at presentation. HRCT has an increasingly important role in the assessment of ILD. In some cases, the results may obviate the need for biopsy. BAL can help confirm the diagnosis of ILD; it also can identify conditions such as infection or hemorrhage or suggest an alternative diagnosis. Surgical lung biopsy has the advantage of yielding samples of lung tissue that are usually diagnostic, especially if HRCT is used to target lung regions. (J Respir Dis. 2005;26(11):466-478)


Sripal Bangalore, MD

Latest:

Who Needs Beta-Blockers? Analysis Raises Questions

A new analysis of data from a large international registry finds that use of beta-blockers in patients with and without a history of coronary artery disease does not reduce cardiovascular events.


Stacy Davis, MBBS

Latest:

Approved Treatments for Osteoporosis and What’s in the Pipeline

Along with the release of revised guidelines, several pharmacological therapies have become available or are under investigation to help improve outcomes in patients with osteoporosis.


Stanley Goldfarb, MD

Latest:

Diabetic Nephropathy: Early Clues, Effective Management

Nephropathy develops in about 30% of patients with diabetes. Screen for albuminuria at the time type 2 diabetes is diagnosed and within 5 years of diagnosis of type 1 diabetes.


Stanley I. Martin, MD

Latest:

Cryptococcal Meningitis: Review of Current Disease Management

The incidence of cryptococcal infections in the HIV-infectedpopulation has diminished because of the effectiveness of anti retroviraltherapy, whereas the incidence in non–HIV-infectedhosts has grown. Despite improvements in antifungal therapy,successful outcomes in the management of cryptococcalmeningitis are dependent on a high index of clinical suspicion,appropriate use of diagnostic assays, early and aggressiveantifungal therapy, and recognition of complications such asincreased intracranial pressure and immune reconstitutionsyndromes. Published guidelines for the care of patients withcryptococcal meningitis are available and may be adapted toindividual patient requirements. Basic and clinical studies areneeded to further define the components of immune protection,optimal therapy in special patient populations, and the recognitionand treatment of complications of cryptococcal meningitis.[Infect Med. 2008;25:11-23]


Stanley Ostern, MD

Latest:

Erythema Chronicum Migrans in Lyme Disease

A 34-year-old man experienced fever and arthralgia several days after appearance of the rash.


Stanley Reichman, MD

Latest:

Rate-Related Septal Infarct Pattern

A 64-year-old asymptomatic woman with a 10-year-history of hypertension was referred for blood pressure control. She had no other significant medical history. The patient denied exertional chest discomfort or dyspnea. Her medications included atenolol, lisinopril, and hormone replacement therapy.


Stanley Wallach, MD

Latest:

Osteoporosis Circumscripta

Skull x-ray films were taken after this 62-year-old nursing home resident fell and hit his head. The radiographs revealed only a sharply demarcated radiolucent area, mainly over the right parietal bone. Osteoporosis circumscripta was diagnosed.


Stanton M Paddock

Latest:

DDW: A Multimedia Special Report

WASHINGTON -- This special report from Stanton M. Paddock, a MedPageToday contributing photographer, presents Ted Bader, M.D., of University of Oklahoma, discussing infection of Hepatitis C in Vietnam veterans.


Stephanie Casey, MD

Latest:

Middle-Aged Woman With Numerous Skin Lesions

A 54-year-old woman presents for an initial consultation. She has multiple chronic disorders, including type 2 diabetes mellitus and hypertension, for which she takes various medications-none of which are new.


Stephanie F. Marschall, MD

Latest:

Dermatomyositis

This inflammatory myopathy is believedto be related to immune-mediatedmuscle damage. An increased incidenceof malignancy is associatedwith dermatomyositis (DM), especiallyin patients older than 50 years.


Stephanie Johnson

Latest:

Elderly Woman With Facial Edema and Erythema, and Tattoo on Forearm

An 87-year-old woman who recently moved to an assisted living facility from her home is seen for evaluation of facial edema and erythema after a bee or wasp sting sustained 2 days earlier. Patient denies pain, pruritus, or visual changes. She took one dose of diphenhydramine shortly after the event and has noticed that the edema, which affected primarily the right side of the face, near the sting, has improved.


Stephanie Salas, MD

Latest:

Sudden-Onset, Discrete, Painful Lesions in a 39-Year-Old Man

A 39-year-old man sought evaluation ofnewly erupted skin lesions on his arms.Ten days earlier he had fallen on hisforearms, but no bruises appeared atthat time.


Stephanie Ward, MD, MPH

Latest:

Fracture After Fall in a Middle-Aged African American Woman

A 58-year-old African American woman comes for a follow-up visit after sustaining a fracture of the right radius, which occurred when she tripped on loose carpeting and broke her fall with an outstretched hand.


Stephen A. Klotz, MD

Latest:

Oropharyngeal candidiasis: Diagnostic clues, treatment tips

The most common manifestation of oropharyngealcandidiasis (OPC) is pseudomembranous candidiasis, commonlyknown as "thrush," which appears as a whitish yellow,curdlike discharge on the mucosal surfaces. Other forms ofOPC include denture stomatitis, angular cheilitis, and glossitis.Patients with denture stomatitis are usually asymptomatic, butthe tissue beneath the denture is typically red and hyperplastic.Patients with angular cheilitis may complain of a burning sensationat the margins of the lips. Candidiasis involving thetongue can be exuberant and is usually associated with complaintsof a white tongue, taste alterations, and a burning sensationof the tongue. The diagnosis of OPC can be establishedby identifying typical fungal elements on potassium hydroxidepreparation or Gram stain of scraped material. Treatment optionsinclude clotrimazole, fluconazole, itraconazole, and nystatin.(J Respir Dis. 2008;29(3):128-135)


Stephen C. Machnicki, MD

Latest:

Scrotal Lesions:

The differential diagnosis of intrascrotal pathology includes a myriad of benign and malignant entities. Timely detection is imperative to reduce the morbidity associated with many of these disease processes.


Stephen Chitty, MD

Latest:

A reduction in D l CO may be an early sign Recognizing PAH in patients with systemic sclerosis key words: Pulmonary arterial hypertension, Systemic sclerosis, Scleroderma

abstract: Pulmonary arterial hypertension (PAH) is a common complication in patients with systemic sclerosis and is associated with an increased mortality rate. Patients are often asymptomatic early in the disease, but as the disease progresses, exertional dyspnea and fatigue develop. The workup usually includes chest radiography, pulmonary function tests, and Doppler echocardiography. If the results of Doppler echocardiography are consistent with PAH, the patient should undergo right heart catheterization. Patients with mild PAH who demonstrate considerable vasoreactivity are potential candidates for treatment with oral calcium channel blockers. Other therapies that can reduce symptoms and improve exercise tolerance and hemodynamics include bosentan and epoprostenol.


Stephen Clement, MD

Latest:

Man With Headache, Diplopia, Nausea, and Vomiting

A 68-year-old man presents to the emergency department with diplopia and headache of acute onset accompanied by nausea and vomiting.

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