Laboratory methods
Erythrocytes in Skin Scrapings After KOH Solution Treatment
Microscopy of skin scrapings in 20% potassium hydroxide (KOH) solution: erythrocyte changes and features of differential diagnosis of artifacts.
Tag
Analysis Artifacts
Hematology
Endothelial Cells in Peripheral Blood Smear: Morphology
Morphology of endothelial cells in blood smears during severe conditions and intoxications: identifying features and differential diagnosis with atypical cells.
Lab test interpretation
Pollen in Urine Sediment: Differentiating from Parasites
Microscopy of urine sediment: differential diagnosis of plant pollen from protozoan cysts and helminth eggs. Artifacts in general urine analysis.
Lab test interpretation
Stool Microscopy: Protozoan Cysts vs. Plant Cells
A clinical case of stool microscopy in a child using Lugol's solution. Differential diagnosis of protozoan cysts, fungi, and plant elements in a coprogram.
Laboratory methods
Myelin in Nail Samples: Distinguishing from Fungal Spores
Microscopy of nail scrapings with 20% KOH: why myelin is mistaken for fungal spores, morphological differences of artifacts, and sample preparation features.
Lab test interpretation
Microscopy of Flora Smear: Inclusions in Squamous Epithelium
Analysis of flora smear microscopy: squamous epithelial cells, rod-shaped flora, and differential diagnosis of intracellular inclusions versus staining artifacts.
Laboratory methods
Yeast-like Fungi Contamination in Blood Smears
Yeast-like organisms in blood smears as a result of contamination during sample collection or staining. Analysis of a preanalytical error in clinical practice.
Laboratory methods
Elastic Fibers in Skin Scrapes: Distinguishing from Fungal Mycelia
Learn to differentiate elastic fibers from fungal mycelia in skin scrapes under microscopy with 20% KOH: morphology, branching, and optical properties.
Parasitology
Differential Diagnosis of Parasite Eggs and Pollen Grains
Microscopy of plant pollen grains at 400x magnification: morphological features and differential diagnosis with helminth and protozoan eggs.
Parasitology
Differentiating Pollen Grains from Toxocara Eggs in Microscopy
Criteria for differential diagnosis of pollen grains and Toxocara eggs in stool microscopy: assessing size, pores, and shell surface relief.
Hematology
Fungi in Peripheral Blood and Bone Marrow Smears
Morphology of fungi in hematological preparations: Aspergillus in blood, Fusarium spores, and contaminants in bone marrow aspirate.
Lab test interpretation
Alternaria Fungal Spores in Urine Sediment Microscopy
Learn to identify Alternaria fungal spores in urine sediment. Understand why finding conidia is an artifact with no diagnostic significance.