HIV AIDS

A 48-year-old man with jaundice, nausea, vomiting, and abdominal pain was hospitalized. The patient-a recovering alcoholic-was afebrile and reported abstinence from alcohol for 6 months.

For the past 3 months, a 66-year-old man has suffered fatigue and loss of appetite and weight. He was not coughing, nor had he experienced fever, chest pain, or hemoptysis. He had no history of notable respiratory disease, and he was not aware of having had tuberculosis (TB).

After 1 day of upper abdominal pain, nausea, and vomiting, a 32-year-old man sought medical care. He had no significant medical history. The patient had tenderness and guarding in the right upper quadrant; no mass was detected. The remainder of the physical examination was normal.

A 42-year-old man with a 2-year history of AIDS sought medical advice for intractable diarrhea, which he had had for several months. Standard AIDS medications were prescribed, but his compliance with the drug regimen was poor.

Abstract: Tuberculous meningitis has several different clinical presentations, including an acute meningitic syndrome simulating pyogenic meningitis, status epilepticus, stroke syndrome, and movement disorders. Cranial nerve palsies and seizures occur in about one third of patients, and vision loss is reported by almost 50%. The cerebrospinal fluid (CSF) typically shows moderately elevated levels of lymphocytes and protein and low levels of glucose. The demonstration of acid-fast bacilli in the CSF smear or Mycobacterium tuberculosis in culture confirms the diagnosis. CNS tuberculosis may also manifest as intracranial tuberculomas. The characteristic CT and MRI finding is a nodular enhancing lesion with a central hypointensity. Antituberculosis treatment should be initiated promptly when either tuberculous meningitis or tuberculoma is suspected. (J Respir Dis. 2005;26(9):392-400)

A 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.

This painless, bleeding lesion had developed insidiously on the penis of a 47-year-old HIV-positive man. The patient was inconsistently compliant with antiretroviral therapy. He had a history of Pneumocystis carinii pneumonia and widespread cutaneous Kaposi sarcoma. The 2.5-cm, friable but firm, exophytic nodule was on the distal shaft of the penis.

Each year almost 5 million Americans sustain an animal or human bite. Dog bites alone represent 0.4% to 1% of all emergency department (ED) visits and can range from trivial to life-threatening.

Advances in the understanding of multiple sclerosis (MS) have translated into aggressive treatment regimens that enhance patients' quality of life. In this article, we discuss the therapeutic options, especially treatments that are directed toward the underlying immunologic mechanisms of the disease. Because of its direct effect on quality of life, aggressive management of symptoms is emphasized.

Coccidioides immitis is a di-morphic fungus that causes pulmonary disease with a variety of clinical and radiographic presentations. Miliary pulmonary disease is very uncommon and is found almost exclusively in immunocompromised patients. The authors describe the case of an immunocompetent patient who had disseminated coccidioidomycosis with a miliary pulmonary disease pattern. Obtaining a careful travel history and considering regional fungal infections was integral to making a prompt diagnosis.

The authors describe a case of acute eosinophilic pneumonia (AEP) that occurred in a previously healthy young man. The presentation was similar to that of acute respiratory distress syndrome (ARDS), and the diagnosis was established by bronchoalveolar lavage (BAL). The authors note that it is important to recognize the subset of patients with AEP who present with an ARDS-like picture, especially since corticosteroids are very effective in this setting.

Abstract: 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)

Combination therapy with pegylated interferon alfa-2a or alfa-2b and ribavirin (RBV) results in a greater rate of sustained virologic response (SVR) than that seen with standard interferon alone. Patients infected with hepatitis C virus genotype 1 require higher doses of RBV and a longer duration of therapy than do patients infected with genotype 2 or 3. Closely monitor patients for neuropsychiatric effects, especially depression, and hematologic and other toxicities. Because of the teratogenicity of RBV, strict birth control must be used throughout the course of treatment and for 6 months afterwards. Patients who have not demonstrated a 100-fold reduction in viral load after 12 weeks of therapy are unlikely to achieve SVR; discontinuation of therapy may be considered.

HCV is the most common cause of chronic liver disease and the leading indication for liver transplantation in the United States. It is responsible for 8000 to 10,000 deaths annually. In this article, we review the principal diagnostic guidelines for hepatitis C.

32-year-old man presents with a 4-day history of fever (temperature as high as 38.8 C to 39.4 C with severe rigors, chills, and profuse night sweats; generalized myalgias, including dull, aching headache; and dry cough.

Stories about community-associated infections with methicillin-resistant Staphylococcus aureus (MRSA) have been making headlines in recent months in both the medical and popular press. A familiar problem in hospitals and nursing homes for decades, growing numbers of MRSA infections have been documented over the past few years in prison inmates, soldiers, athletes, Pacific Islanders, Alaska Natives, Native Americans, and men who have sex with men.

A 42-year-old woman presents with severe diarrhea that began 3 days earlier and has become progressively more severe. She is now having 10 or more watery bowel movements per day. She has had moderate nausea but no emesis, hematemesis, or hematochezia.

Anorectal abscesses and fistulae, pilonidal disease, rectal prolapse, pruritus ani, and anal masses are discussed, with an emphasis on diagnosis and treatment of these conditions in the primary care office setting.

Anorectal complaints are commonly seen in primary care practice. The two most common anorectal conditions are hemorrhoids and anal fissures.

This case highlights the importance of detecting HIV infection in its earliest stages. Each year, 40,000 new cases of HIV infection are diagnosed in the United States; however, very few of these are identified at the acute infection stage. Diagnosis of primary HIV infection is important because it improves the patient's chances for a good outcome, reduces the risk of transmission, and provides epidemiologic data on virus strains in the community.

A 13-year-old boy presented with an explosive eruption of numerous, small, round, erythematous, itchy plaques on his lower back and lower limbs of 2 weeks' duration. Some of the lesions were scaly. His nails were normal. There was no evidence of arthritis or joint deformity. He had a sore throat a month before the onset of the rash but did not seek medical attention. He was not taking any medication and had no history of joint pain or family history of skin problems.

An 80-year-old man complains of lancinating pain in his right axilla and chest that began 2 days earlier and has kept him awake at night. He has had no fever, cough, sputum production, dyspnea, or symptoms suggestive of congestive heart failure.

Abstract: The use of sputum studies and blood cultures in patients hospitalized with community-acquired pneumonia (CAP) is somewhat controversial, and recommendations continue to evolve. A reasonable approach is to attempt to obtain sputum cultures from all patients before initiating antibiotic therapy. If antibiotics have already been given, sputum studies can be reserved for patients who are severely ill or who are at risk for infection with a resistant organism or an organism that is not covered by the usual empiric therapy. The Infectious Diseases Society of America and the American Thoracic Society both recommend obtaining blood cultures from all patients. However, cost considerations have led to alternative strategies, such as reserving blood cultures for those with severe CAP. (J Respir Dis. 2005;26(4):143-148)

A 38-year-old man presented to the emergency department (ED) with a 2-week history of worsening shortness of breath and dry cough. He also complained of anorexia, a 14-kg (30-lb) weight loss over 3 months, pleuritic chest pain, and night sweats.

A 45-year-old Asian man presents with a 3-week history of weight loss, poor appetite, fatigue, intermittent sweats, and a nonproductive cough. The patient, a recent immigrant, denies previous illness.

ABSTRACT: Although the widespread use of prostate-specific antigen (PSA) testing has led to an increase in the number of cancers detected, controversies about the benefits of screening persist. No conclusive evidence has yet emerged that PSA screening reduces the mortality associated with prostate cancer. Thus, mass screening is not universally endorsed. The American Urologic Association and the American Cancer Society recommend that digital rectal examination and PSA testing be offered annually to men 50 years and older with an estimated life expec- tancy of 10 years or more. High-risk patients (those with a positive family history or those of African American descent) are advised to begin screening at age 45. The decision to screen is based on the patient's preference following a thorough discussion of the benefits and limitations of PSA testing. Refer to a urologist any patient with a PSA greater than 4.0 ng/mL. Also, be alert for high PSA velocity changes in patients undergoing annual screening, and refer those with a PSA velocity of more than 0.75 ng/mL/y.

ABSTRACT: Rely on the history and physical findings when you evaluate a hand injury. After you control any active bleeding, test the motor and sensory functions of the radial, ulnar, and medial nerves. Use the rule of the 5 P's-pulses, pallor, pain, paresthesia, and paralysis-to guide the vascular examination. Assess the muscles and tendons by testing their flexion and extension functions against mild resistance. After anesthetizing any wound sites, apply high-pressure saline irrigation to remove debris and reduce bacterial contamination to prevent infection. To repair skin injuries, use a closure method appropriate to the condition of the wound. Infection-prone wounds-such as crush, grossly contaminated, and bite injuries-may require antibiotic prophylaxis and possibly delayed closure.

ABSTRACT: The rate at which acute dyspnea develops can point to its cause. A sudden onset strongly suggests pneumothorax (especially in a young, otherwise healthy patient) or pulmonary embolism (particularly in an immobilized patient). More gradual development of breathlessness indicates pulmonary infection, asthma, pulmonary edema, or neurologic or muscular disease. A chest film best identifies the cause of acute dyspnea; it can reveal pneumothorax, infiltrates, and edema. Pulmonary embolism is suggested by a sudden exacerbation of dyspnea, increased ventilation, and a drop in PaCO2. A normal chest radiograph reinforces the diagnosis of pulmonary embolism, which can frequently be confirmed by a spiral CT scan of the chest. Pneumonia can be difficult to distinguish from pulmonary edema. In this setting, bronchoalveolar lavage and identification of the infectious organism may be necessary to differentiate between the 2 disorders.

ABSTRACT: Asymmetry-whether of strength, reflexes, or sensory function-is an important localizing finding in the neurologic evaluation. Asymmetric deficits of strength may indicate an acute CNS lesion. Symmetric hyperreflexia or hyporeflexia alone is not diagnostic; compare reflexes between sides of the body and between upper and lower extremities. The extensor plantar response (Babinski reflex) suggests an upper motor neuron lesion. During the sensory examination, look for asymmetry and determine whether both light touch and pinprick sensation are intact. Simultaneous stimulation with 2 sharp objects on opposite sides of the body-done to detect extinction of response on 1 side-can uncover subtle sensory deficits.

ABSTRACT: When you approach a patient with a neurologic complaint, look for abnormal postures and bodily asymmetries. Careful history taking puts the patient's complaint in context and gives direction to the clinical investigation. Remember that a change in the character of an existing condition requires assessment as a new complaint. The mental status evaluation, at a minimum, considers the patient's level of alertness and orientation, including speech and comprehension. Distinguish among delirium, dementia, and psychosis, and avoid making a psychiatric diagnosis until organic causes have been excluded. Cranial nerves II to VIII are the most pertinent to the neurologic screening examination. The evaluation of cranial nerves II, III, IV, and VI is particularly important in patients with headache or visual disturbances and suspected intracranial lesions.