Instructions: Read the following cases and answer the questions accordingly. Type your answer after each question. Case 1 An 80-year old woman suffered a third-degree burn 2 months ago. Biopsy of the...

Instructions: Read the following cases and answer the questions accordingly. Type your answer after each question.

Case 1

An 80-year old woman suffered a third-degree burn 2 months ago. Biopsy of the infected lungs revealed parallel arranged hyphae with regularly spaced septate. No yeast cells.

1. What is the most probable diagnosis?

2. What is the probable source of infection in the patient?

3. Discuss the pathogenesis for his lung infection.

Case 2

A woman visited her garden and while pruning some rose bushes accidentally pricked her finger. Initially, it developed into a local pustule but eventually progressed to an ulcer. Several nodules where then observed along the local lymphatic drainage.

1. What is the most likely cause of the ulceration?

2. What is most likely the route by which the infection was transmitted?

3. What is the most reliable method to confirm the presence of the etiologic agent asked in #1?