septate hyphae Archives - Page 2 of 2

Direct Microscopy of Fungal Specimens: Observation, Interpretation,Key Differential Diagnoses,Recommended Follow-Up, and Conclusion

July 31, 2025 by Medical Lab Notes

Fungal element found in KOH mount of BAL from an immunoocomprimized host

Microscopic Observation Interpretation The structure is highly suggestive of fungal elements, most likely: Septate fungal hyphae Key Differential Diagnoses Finding Possible Organism Septate hyphae, acute angle branching Aspergillus spp. Pseudohyphae with budding Candida spp. Broad, ribbon-like, non-septate Mucorales (less likely here) Recommended Follow-Up Conclusion This …

Penicillium vs Paecilomyces: Introduction, Detailed Comparison, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

July 23, 2025 by Medical Lab Notes

Penicillium typical structure in LPCB preparation

Introduction of Penicillium vs Paecilomyces Penicillium is a ubiquitous, saprophytic mold found in soil, air, and decaying organic matter. Known for producing the first antibiotic, penicillin, it is typically non-pathogenic but occasionally causes opportunistic infections in immunocompromised hosts. Paecilomyces (especially P. lilacinus and P. variotii) …

Yeasts vs Molds: Detailed Comparison, Mixed Growth Isolation, Approach to Mixed Growth Handling, and Mixed Growth Interpretation

July 22, 2025 by Medical Lab Notes

Yeasts vs Molds: Detailed Comparison Feature Yeasts Molds Definition Unicellular fungi Multicellular filamentous fungi Structure Oval/round, single cells Hyphae form mycelium; septate or aseptate Reproduction Asexual (budding or fission); some sexual forms Asexual (spores like conidia/sporangia); sexual spores Hyphae Absent, but pseudohyphae may be present …

Paecilomyes marquandii-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

February 9, 2025 by Medical Lab Notes

Conidia, conidiophores, and phialides of Paecilomyes marquandii in LPCB preparation of culture microscopic examination

Introduction of Paecilomyes marquandii Paecilomyces marquandii is a saprophytic fungus found in soil and decaying matter. Moreover, it sometimes acts as an opportunistic pathogen. Additionally, it infects immunocompromised patients. Furthermore, clinicians report emerging cases of this fungus in various clinical settings. Morphology The fungus forms …

Penicillium cheresanum: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

January 17, 2025 by Medical Lab Notes

Introduction Penicillium cheresanum is a species of mold belonging to the genus Penicillium, commonly found in soil and decaying organic matter. Moreover, it thrives in a variety of environments, demonstrating its adaptability to different ecological conditions. In addition, this mold is known for producing secondary …

Bipolaris: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

July 31, 2023 by Medical Lab Notes

Introduction Bipolaris is a genus of filamentous fungi belonging to the family Pleosporaceae within the order Pleosporales. These fungi are commonly found in various environments, such as soil, plant debris, and decaying vegetation. Bipolaris species (they) are known to be plant pathogens, causing a range …

Aspergillus: Introduction, Classification, Colony Morphology, Pathogenesis, Clinical Features, Lab Diagnosis, Treatment, and Prevention

November 26, 2022November 17, 2022 by Medical Lab Notes

Aspergillus niger Colony Morphology on Sabouraud Dextrose Agar (SDA) after 3 days of incubation

Introduction of Aspergillus The genus Aspergillus has more than 180 species, among them, 38 are responsible to cause disease (able to grow at 37◦C. They are common in the environment. Aspergillus species are emerging pathogens which are ubiquitous molds that infect immunocompetent ( rarely) and immunocompromised …

KOH Wet Mount Preparation: Introduction, Principle, Test Requirements, Procedure, Result Interpretation, Uses, Keynotes, and Collection of KOH Mount Footages

December 6, 2022January 17, 2022 by Medical Lab Notes

Potassium hydroxide (KOH) Wet Mount Introduction The KOH Wet Mount is a very simple and important technique in mycology for presumptive diagnosis of the type of fungal infections whether ringworm, aspergillosis, dermatomycosis, blastomycosis, mucormycosis, otomycosis, etc. It is the most common assay ordered by clinicians, particularly …