12 results
Von Graefe's Sign - Graves' Eyelid Ophthalmopathy on Ocular Exam

Lagging of the upper eyelid on downward
Graefe's Sign - Graves ... the eye #Von #Graefes ... VonGraefes #Sign #Graves ... #PhysicalExam #ophthalmology ... endocrinology #hyperthyroidism
Plasmodium Falciparum Blood Smear.
Key features suggesting Plasmodium falciparum:
- extreme parasitemia
- normocytic RBCs (vivax, ovale prefer big
Falciparum Blood Smear ... reticulocytes) - thin trophozoites ... Rich Davis, PhD, ... peripheral #clinical #microscopy ... #microbiology #
Babesia spp. on Peripheral Blood Smear Microscopy
 - Multiple small parasites per RBC
 - "maltese cross"
Peripheral Blood Smear ... Microscopy - Multiple ... parasitemia Rich Davis ... #microbiology # ... peripheral #blood #smear
Plasmodium falciparum trophozoites (and crenated red blood cells) - Blood Smear

A classic presentation of Plasmodium falciparum
cells) - Blood Smear ... in a thin blood smear ... scalloped edge) Rich Davis ... peripheral #clinical #microscopy ... #malaria #microbiology
Plasmodium Falciparum Gametocytes on Blood Smear.

Banana-shaped gametocytes are only seen in Plasmodium falciparum but rare in
Gametocytes on Blood Smear ... rare in blood smears ... Rich Davis, PhD, ... peripheral #clinical #microscopy ... #microbiology #
Giardia lamblia trophozoites on stool microscopy
A classic ova and parasite trichrome stain showing owl-eyed Giardia trophozoites
Giardia lamblia trophozoites ... on stool microscopy ... Rich Davis, PhD ... #clinical #microscopy ... #microbiology #
Entamoeba coli trophozoite on Microscopy
 - large, eccentric karyosome, coarse chromatin
 - messy cytoplasm
 - 15-25um
Entamoeba coli trophozoite ... on Microscopy ... 10-35um) Rich Davis ... #clinical #microscopy ... #microbiology
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
• Myasthenia Gravis ... • Myasthenia Gravis ... Subdural Hemorrhage Grave's ... Ophthalmopathy • Hyperthyroidism ... Algorithm #Causes #Ophthalmology
Aspergillus clavatus on Microscopy
"clavate"="club-like"
An occupational health hazard, it grows on malt & grains - brewery workers
Aspergillus clavatus on Microscopy ... grows on malt & grains ... Rich Davis, PhD, ... clavatus #clinical #microscopy ... #microbiology #
Streptobacillus moniliformis on peripheral smear and culture microscopy
 - blood culture; patient w/ outdoor exposure
 -
on peripheral smear ... and culture microscopy ... Rich Davis, PhD, ... #clinical #microscopy ... #microbiology #