Lab test interpretation
Calcium Oxalate Crystals in Urine Sediment: Microscopy
Morphology of calcium oxalate crystals in urine sediment under microscopy. Oval forms, dumbbells, and conglomerates: differential diagnosis from fungal spores.
Tag
Differential Diagnosis
Oncohematology
Microscopy Challenge: Identify Lymphocyte Among Blasts
A diagnostic challenge in blood cell morphology: identify a mature lymphocyte within a group of blast cells using light microscopy of a blood smear.
Lab test interpretation
Fecal Biomarkers in Chronic Diarrhea Diagnostics
Key fecal biomarkers for laboratory diagnosis of chronic diarrhea: markers of intestinal inflammation, infections, and malabsorption.
Parasitology
Ancylostoma duodenale: Morphology and Lab Diagnosis
Identification criteria for Ancylostoma duodenale: egg morphology, Charcot-Leyden crystals in stool, oral capsule structure, and differentiation from Necator americanus.
Parasitology
Comparative Sizes of Helminth Eggs and Protozoan Cysts
A comparative diagram of the sizes of helminth eggs, protozoan cysts, and trophozoites for microscopic differential diagnosis of parasitic invasions.
Parasitology
Parasitology Case: Duodenal Helminth Identification
A clinical parasitology case: identification of a helminth and its eggs found during duodenal endoscopy and copro-ovoscopy.
Lab test interpretation
Total Antibodies and IgG in Syphilis ELISA Diagnostics
Why are total antibodies to Treponema pallidum positive, but IgG negative? An explanation from an ELISA test system manufacturer and differential diagnostics.
Parasitology
Differentiating Hymenolepis nana and H. diminuta Eggs
Morphological differences between Hymenolepis nana and H. diminuta eggs: size, presence of polar filaments, and laboratory diagnosis of hymenolepiasis.
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.
Clinical cases
Cytological Features of De Quervain's Subacute Thyroiditis
Cytological picture of subacute thyroiditis: multinucleated giant cells, epithelioid histiocytes, colloid, and differential diagnosis.
Clinical cases
Diagnosing Gonorrhea by Microscopic Smear Examination
Microscopic signs of gonorrhea (Neisseria gonorrhoeae) in urogenital smears: clusters of diplococci, leukocyte reaction, and PCR confirmation.
Clinical cases
Desmoplastic Small Round Cell Tumor: Cytology
Cytological features and IHC profile of desmoplastic small round cell tumor in effusions. Diagnostic experience with a rare sarcoma at the P.A. Herzen Moscow Oncology Research Institute.