A 60-year-old man presented to the emergency department with slowly progressing edema of the lower legs of 3 months' duration. In the week prior to presentation to the emergency department, he noticed a sudden eruption of vesicles and bullae on the right leg that drained clear fluid and healed with brown crust. The lesions were associated with mild burning, pruritus, and pain. He denied fever, chills, recent travel, or injury. His medical history was notable for poorly controlled diabetes mellitus, congestive heart failure, hypertension, chronic kidney disease, hyperlipidemia, and chronic anemia. Physical examination revealed multiple scattered erythematous vesicles and bullae on the right leg on a background of hyperpigmentation. Bilateral 2+ pitting edema of the legs also was present. A punch biopsy of a lesion was performed. WHAT'S YOUR DIAGNOSIS? a. bacillary angiomatosis b. cutaneous B-cell lymphoma c. elephantiasis nostras verrucosa d. filariasis e. Kaposi sarcoma Dr.