Mucorales

Question 1

 common environmental isolates associated with soil and plants.

Answer 1

mucorales

Question 2

 contaminate grains, breads, and fruits and are most often associated with infections of the sinuses, lungs, and skin of immunocompromised patients

Answer 2

mucorales

Question 3

 Diabetes is a significant risk factor for these infections.

Answer 3

mucorales

Question 4

Mucorales infection is comprises of different groups or fungi:

Answer 4

1. Cunninghamella
2. Lichtheimia
3. Mucor
4. Rhizopus
5. Syncephalastrum

Question 5

 can be recovered from the sinuses or other organs during disseminated disease

Answer 5

cunninghamella

Question 6

 Sporangiophores are erect, branching into several vesicles that bear sporangioles, and may be covered with long, fine spines.

Answer 6

cunninghamella

Question 7

 rapidly growing and form a cottony colony that is initially white but becomes gray with age.

Answer 7

cunninghamella

Question 8

 have a predilection for vascular invasion, causing thrombosis and necrosis of the tissues.

Answer 8

lichtheimia

Question 9

 usually found in patients with diabetes and ketoacidosis.

Answer 9

lichtheimia

rhizopus

Question 10

 In this patient population, the infection usually begins in the sinuses, where conidia are inhaled and take up residence.

Answer 10

Lichtheimia

Question 11

 From the sinuses, infection rapidly spreads to the orbits, face, palate, and brain.

Answer 11

rhinocerebral mucormycosis.

Question 12

 are found worldwide and are often associated with soil or decomposing organic matter

Answer 12

lichtheimia

Question 13

 Erect sporangiophores, solitary or in groups (slightly branched), terminate in an apophysis surrounded by a sporangium.

Answer 13

lichtheimia

Question 14

short, thin projections that anchor the growing cells to substratum

Answer 14

internal rhizoids

Question 15

Colonies are woolly and grow rapidly, completely covering the culture medium.

Answer 15

rhizopus. lichtheimia

Question 16

 have been implicated in rhinocerebral mucormycosis in addition to disseminated disease.

Answer 16

mucor

Question 17

Sporangiospores are formed in sporangia on erect sporangiophores

Answer 17

mucor

Question 18

grow rapidly and form cottony, dirty white colonies that become mousy brown to gray with age.

Answer 18

mucor

Question 19

 may be refractory to treatment and may be recovered from almost any source. With worldwide distribution, this isolate is easily recovered from the environment in decaying vegetation.

Answer 19

rhizopus

Question 20

 The sporangia are typically fragile and are not easily retained when making slide culture preparations, resulting in an umbrella-shaped structure at the end of the conidiophores.

Answer 20

mucor

Question 21

 Colonies are initially white but become gray to brown with age

Answer 21

rhizopus

Question 22

 rarely implicated in human disease but has been documented in cutaneous infections.

Answer 22

syncephalastum

Question 23

 This fungus is found in soil and decaying vegetation.

Answer 23

syncephalastum

Question 24

 Isolates are sometimes confused with Aspergillus on initial examination

Answer 24

syncephalastum

Question 25

Each sporangiophore has a large columella on which merosporangia, containing stacks of sporangiospores, are formed

Answer 25

syncephalastum

Question 26

 Colonies are rapidly growing and are initially white and become gray with age.
 The growth rate is rapid, with colonies covering the entire surface of the agar.

Answer 26

syncephalastum