Sporothrix schenckii

Ans. B- Sporotrichosis

• Sporothrix  schenckii is a thermally dimorphic fungus that lives on vegetation.
• It is associated with a variety of plants— grasses, trees, sphagnum moss, rose bushes, and other horticultural plants.
• Following traumatic introduction into the skin, S schenckii causes sporotrichosis, a chronic granulomatous infection.

• Specimens include biopsy material or exudate from granulomatous or ulcerative lesions.
• The yeasts are 3–5 μm in diameter and spherical to elongated. 

• Another structure termed an asteroid body is often seen in tissue, particularly in endemic areas such as Mexico, South Africa, and Japan
• An asteroid body is a microscopic finding seen within the giant cells of granulomas in diseases such as sarcoidosis and foreign-body giant cell reactions.
• In hematoxylin and eosin-stained tissue, the asteroid body consists of a central basophilic yeast cell surrounded by radiating extensions of eosinophilic material, which are depositions of antigen-antibody complexes and complement

Ans. is ‘a’ i.e., Sporothrix schenckii

• Multiple vesicles on hand and multiple eruptions along the lymphatics in a gardner suggest the diagnosis of cutaneous sporotrichosis.

Ans. is ‘d’ i.e., Sporothrix schenckii

• Multiple vesicles on hand and multiple eruptions along the lymphatics in a Gardner suggest the diagnosis of cutaneous sporotrichosis.

Ans. is ‘a’ i.e., Sporothrix schenckii

.   Series of ulcers in a row suggests the diagnosis of sporotrichosis.

Ans. is ‘c’ i.e., Sporothrix Schenckii

• Presence of multiple ulcers in the leg (along the lymphatic channels) in a farmer (out door worker) from the sub himalyan region suggests a diagnosis of Sporothrix Schenkii.

Ans. is ‘a’ i.e., Sporothrix; ‘b’ i.e., Sporotrichosis

. Some times ‘asteroid bodies’ are seen in the lesion of sporotrichosis, composed of a central fungus cell with eosinophilic material radiating from it.

Ans. is ‘b’ i.e., Sporothrix schenckii