Clinical Mycology – Page 4

Photo Quiz: Unexpected yeast in a premature infant—pathogen or passenger

mycolabadmin

A newborn baby born very prematurely developed a yeast organism called Malassezia pachydermatis in a sputum sample, which was identified in the hospital laboratory. Researchers investigated whether this yeast was causing a serious infection or was just a harmless colonizer. Follow-up testing showed no infection, and the baby improved without antifungal treatment, suggesting it was contamination rather than true disease. However, this finding is important because this yeast has been known to cause serious infections in premature babies in hospital settings.

Co-Infection of Pulmonary Aspergillosis and Cryptococcal Meningitis in an HIV-Positive Patient: A Case Report

mycolabadmin

This case describes a man with undiagnosed HIV who developed two serious fungal infections at the same time: a lung infection caused by Aspergillus fungus and a brain infection caused by Cryptococcus fungus. His extremely low immune system (CD4 count of 41) made him vulnerable to multiple opportunistic infections. Despite treatment with antifungal medications, his condition worsened and he passed away, highlighting the dangers of late HIV diagnosis.

Professor Emel Tümbay (1941–2025): A Pioneer of Medical Mycology in Türkiye

mycolabadmin

Professor Emel Tümbay was a pioneering scientist who transformed medical mycology in Türkiye from 1941 to 2025. She established the country’s first diagnostic mycology laboratory, wrote important reference books, and trained many specialists who spread her knowledge throughout the nation. Her work helped doctors better understand and treat fungal diseases, and she is remembered as a dedicated educator and passionate scientist.

Fungal peritonitis in a patient on peritoneal dialysis caused by Hyphopichia burtonii: A rare pathogen in human infection

mycolabadmin

A woman with kidney disease on peritoneal dialysis developed an unusual fungal infection caused by Hyphopichia burtonii, a fungus typically found in spoiled food. The infection was diagnosed using advanced protein analysis technology and treated with antifungal medication after removing the dialysis catheter. Though extremely rare in humans, this case shows that unusual fungi can cause serious infections in patients with weakened immune systems and highlights the importance of considering these organisms when standard treatments don’t work.

The first report of rhinosinusitis by Rhizopus delemar in a patient with severe COVID-19 in Iran: a case report

mycolabadmin

A 63-year-old man hospitalized with COVID-19 developed a serious fungal sinus infection caused by a rare mold called Rhizopus delemar. Despite surgery to remove infected tissue and treatment with antifungal medication amphotericin B, the infection spread and the patient died after five weeks. This was the first documented case of this particular mold causing sinus infection in a COVID-19 patient in Iran, highlighting how severe fungal infections can occur as dangerous complications of COVID-19.

Acute fungal endometritis in women with abnormal uterine bleeding: Clinical and microbiological insights

mycolabadmin

This study examined a rare fungal infection of the uterus called fungal endometritis that causes abnormal bleeding and discomfort in women. Researchers found that about 12% of women with unexplained abnormal bleeding had this fungal infection, which was caused by different species of Candida yeast. A simple test using vaginal swabs was not effective for diagnosis; instead, doctors needed to take samples directly from the uterine lining. Treatment with an antifungal medication called voriconazole combined with surgical cleaning was successful in all cases studied.

Spectrum of Fungal Infections in Continuous Ambulatory Peritoneal Dialysis: A 20-Year Retrospective Study From a Tertiary Care Center

mycolabadmin

This study examined fungal infections in patients undergoing continuous ambulatory peritoneal dialysis (CAPD) over 20 years at an Indian medical center. Researchers found that yeast infections, particularly Candida tropicalis, were more common than mold infections, with Aspergillus flavus being the most frequent mold. The study identified several rare and emerging fungi causing these serious infections and tested their susceptibility to antifungal medications. Results show that removing the dialysis catheter combined with appropriate antifungal treatment is crucial for patient survival.

Caspofungin therapy in prosthetic valve endocarditis and candidemia due to itraconazole-resistant Candida glabrata (Nakaseomyces glabratus): A case report

mycolabadmin

A 13-year-old boy developed a serious fungal infection of his heart valve after receiving an artificial valve replacement. The initial antibiotic (itraconazole) did not work because the fungus became resistant, likely by forming a protective biofilm. After identifying the resistant fungus through specialized testing, doctors switched to a different medication called caspofungin. The patient fully recovered with this new treatment and remained healthy during follow-up, showing that combination of precise identification and targeted treatment can overcome antibiotic resistance.

Fungal sepsis in a 7-month-old female: diagnosis through peripheral blood smear

mycolabadmin

A 7-month-old girl with persistent fever that did not respond to antibiotics was found to have a yeast infection in her blood through examination of a blood sample under a microscope. This discovery was unusual because such infections are typically difficult to spot without special culture tests. After treatment with the antifungal medication fluconazole, the child recovered completely. This case shows how simple microscopy can help diagnose serious fungal infections in areas where advanced laboratory testing is not available.

Exposure to Tebuconazole Drives Cross-Resistance to Clinical Triazoles in Aspergillus fumigatus

mycolabadmin

Farmers use a fungicide called tebuconazole to protect crops, but this chemical is similar to medicines doctors use to treat serious fungal infections in patients. A new study shows that when the fungus Aspergillus fumigatus is exposed to tebuconazole, it becomes resistant not just to this pesticide, but also to the clinical antifungal drugs used in hospitals. The fungus develops resistance mechanisms that allow it to survive high doses of these medications. This research highlights an important public health concern: the overuse of similar chemicals in agriculture can undermine our ability to treat dangerous fungal infections in people.

Research Topic: Clinical Mycology