A5-year-old white male has an itchy lesion on his right foot. he often plays barefoot in a city park that is subject to frequent flooding. the lesion is located dorsally between the web of his right third and fourth toes, and extends toward the ankle. it measures approximately 3 cm in length, is erythematous, and has a serpiginous track. the remainder of his examination is within normal limits. which one of the following is the most likely cause of these findings? (check one) a. dog or cat hookworm (ancylostoma species) b. dog or other canid tapeworm (echinococcus granulosus) c. cat protozoa (toxoplasma gondii) d. dog or cat roundworm (toxocara canis or t. mystax)

A41-year-old man comes to the clinic complaining of a chronic cough over the past 4 months, which has now been accompanied by haemoptysis. he denies smoking or any past medical history. on physical examination, his head and neck examination is normal. his lungs have diffuse bilateral rales. cardiac examination is normal. laboratory findings reveal na 142 meq/l, k 4.2 meq/l, cl 110 meq/l, hco3 24 meq/l, bun (blood urea nitrogen) 39 mg/dl, creatinine 2.9 mg/dl. urinalysis reveals microscopic haematuria and 4+ proteinuria. which of the following serologic blood tests would most confirm the suspected diagnosis? - anti-glomerular basement membrane antibodies- anti-mitochondrial antibodies- anti-neutrophilic antibodies- anti-parietal cell antibodies- anti-smooth muscle antibodies