Question

On a vaginal culture, a cream-colored yeast grows on SABHI medium. On corn meal-Tween 80 agar, only small oval blastoconidia are observed. This organism is most likely:

-Candida albicans
-Trichosporon beigelii
-Torulopsis glabrata
-Rhodotorula rubra
-Geotrichum candidum

Answer 1

Based on the presence of small oval blastoconidia on corn meal-Tween 80 agar, the organism most likely responsible for the vaginal culture is Candida albicans, a common cause of vaginal yeast infections and thrush.

Step-by-step explanation:

The organism described in the question is Candida albicans. This is deduced from the presence of small oval blastoconidia without pseudohyphae or germ tubes on corn meal-Tween 80 agar, which is consistent with Candida albicans morphology and growth patterns. Candida albicans is a dimorphic fungus that can grow in yeast form and is known to cause vaginal yeast infections and oral thrush. In a clinical setting, rapid identification methods like the germ tube test, which specifically indicates Candida albicans when positive, can be utilized for accurate diagnosis. Other organisms listed, such as Trichosporon beigelii, Torulopsis glabrata (now reclassified as Candida glabrata), Rhodotorula rubra, and Geotrichum candidum, would show different morphological traits under microscopic examination and when cultured on specific media.