A 22-year-old man comes to the emergency department because of a 1-day history of fever and nontender skin rash over his trunk. He was diagnosed with Hodgkin lymphoma 1 month ago and recently began combination chemotherapy with doxorubicin, bleomycin, vinblastine, and dacarbazine. Medical history otherwise is unremarkable. His temperature is 39.0°C (102.2°F), pulse is 110/min and regular, respirations are 16/min, and blood pressure is 115/70 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 98%. Cardiopulmonary auscultation discloses clear breath sounds bilaterally and normal heart sounds. The abdomen is soft and nontender; bowel sounds are normal throughout. Multiple nontender, indurated macules and pustules and few gangrenous ulcers are noted over his trunk. Laboratory studies show:Hemoglobin 9.2 g/dLMean corpuscular volume 91 μm3Leukocyte count 2,100/mm3Platelet count 100,000/mm3Serum  Sodium 141 mEq/LPotassium 4.3 mEq/LCreatinine 1.0 mg/dLWhich of the following is the most likely diagnosis?A. Bacillary angiomatosisB. Ecthyma gangrenosumC. Herpes zosterD. Pyoderma gangrenosumE. Stevens-Johnson syndrome

A 62-year-old man is hospitalized to receive chemotherapy. His treatment course is complicated by neutropenia (serum neutrophil count <500/μL), and he develops a temperature of 38.6°C. On examination, his IV lines are clean without surrounding erythema, his lungs are clear to auscultation, and he has no other obvious sources of infection. What should be done next in the management of this patient?

A 26-year-old man presents to his primary care physician with fatigue, headache, and a sore throat for the past week. There is also nausea and diarrhea, but no weight loss, productive cough, or difficulty breathing. He has no known past medical history, does not take any medications, and has no recent sick contacts. He is sexually active and uses condoms inconsistently; he drinks alcohol heavily on the weekends and has had previous IV drug use. On examination, his temperature is 39°C and the rest of his vital signs are normal. He has nontender cervical and axillary lymphadenopathy, tonsillar exudates, and mild splenomegaly. There are also several painful, well-demarcated ulcers within his mouth and a mild maculopapular rash over his chest and arms. A rapid Strep test and a monospot (heterophile antibody) test are negative; further screening for chlamydia, gonorrhea, syphilis, and HIV antibody is negative. What is the likely diagnosis?Ask StudybuddyGroup of answer choicesUpper respiratory infectionSecondary syphilisHodgkin lymphomaAcute retroviral syndromeInfectious mononucleosis

A 68-year-old male with a history of lung cancer undergoes follow-up labs after recent cycle of chemotherapy. He has mild difficulty with concentration over the past week but is otherwise able to complete all of his daily tasks. He reports no nausea, vomiting, or positional lightheadedness. He has no other significant past medical history. He takes no medications. Vital signs are as follows: Temperature 99.8°F, RR 18, BP 135/88 mm Hg, pulse 76. On examination, he is alert and oriented. Cardiac examination reveals regular rate and rhythm, no murmurs, JVP not elevated. Lung and abdominal examinations are normal. There is no lower extremity edema. Skin turgor is normal. Neurologic examination reveals 5/5 strength in all extremities, no focal deficits, and normal gait. Laboratory tests reveal the following: serum Na+ 121 mEq/L, K+ 4.3 mEq/L, BUN 7.0 mg/dL, Cr 0.4 mg/dL, glucose 106 mg/dL. TSH 2.0 mU/L. Serum osmolality 250 mOsm/kg, urine Na 45 mEq/L, urine osmolality 450 mOsm/kg. What is the most appropriate management of this patient?

A 35-year-old white man presents to the primary care physician with complaints of fever, weight loss, and a skin rash. The fevers are intermittent and began approximately two months ago. The rash appeared six-week ago. He also complains of abdominal pain and nausea for the past month with a weight loss of 3 kg (6.6 lbs). His medical history is significant for HIV, diagnosed two years ago, and he has not been compliant with his antiretroviral therapy. He denies any sick contacts, but he did recently buy a cat from a shelter three months ago. He lives in Florida and has no recent travel. He is febrile with a temperature is 38.3ºC (101.4ºF) but in no distress. On examination, there are numerous exophytic, raised purple patches on his skin that bleed when instrumented. There are similar lesions on the oral mucosa, tongue and genitals. There is hepatomegaly on abdominal examination. A complete blood count reveals normocytic anemia and mild thrombocytopenia. Alkaline phosphatase is markedly elevated, and transaminases are at the upper limit of normal. His CD4+ count is 140/mm3. CT scan of the abdomen reveals hypodense ring like lesions in the liver that enhance with contrast. Which of the following is the most likely diagnosis?A. AngiosarcomaB. Bacillary angiomatosisC. CryptococcosisD. HistoplasmosisE. MalariaProceed to Next ItemShow Explanation

30-year-old man presents to his physician with a rash on his left leg. He reports that the rash started as a bug bite and is spreading. He denies any fever, chills, or malaise. His medical history is significant for type 1 diabetes mellitus, and his only medication is insulin. On examination of the left leg, there is a 4-cm area of erythema, swelling, and warmth with indistinct margins. There is no gross purulence. What antibiotic should this patient receive?Ask StudybuddyGroup of answer choicesOral dicloxacillinIV vancomycinOral cephalexinOral clindamycin