Download Tongue: Herpes Simplex Glossitis

Tongue: Herpes Simplex Glossitis
Lab 8, Case 1
Cross section of the tongue
There is an area along the surface of the tongue where the normal epithelium has been
lost and there are areas of ulceration (arrows).
1: Epithelium
2: Edge of the ulcer
3: Ulcerated epithelium
There is an inflammatory exudate at the base of the ulcer and some necrotic cells where
the epithelium once was present.
Edge of the ulcer
Even at this power, amphophilic (dark, blue-purple-staining) intranuclear inclusion bodies
can be seen in the epithelial cells. Note the inflammatory infiltrate in the subepithelium.
Epithelium at the edge of the ulcer
Amphophilic intranuclear inclusion bodies can be seen in almost all of the epithelial cells
in this section.
Epithelium at the edge of the ulcer
The cells that have been invaded by the herpes virus contain intracellular accumulations
of amphophilic viral inclusions (arrows).
Brain: Herpes Encephalitis
Lab 8, Case 2
Multiple small,
punctate hemorrhages
throughout the brain
parenchyma (arrows)
Section of brain with numerous perivascular hemorrhages (arrows)
and some areas that appear hypercellular
Blood vessel with perivascular hemorrhage (1), areas with loss of brain parenchyma,
and edema (2)
Even at this power, it can be seen that many of the cells are shrunken and dark red,
suggesting that they are necrotic.
Higher power of previous section
At this power it is easier to see the blood vessel with the perivascular hemorrhage and
lymphocytic cuffing (1). In addition, the areas of edema and loss of neutrophil (2) can be
better appreciated. Red shrunken neurons and glia with pyknotic nuclei (3) are also
evident.
Blood vessel with perivascular hemorrhage and mild perivascular lumphocytic cuffing
(arrow)
In addition, there are numerous red shrunken neurons and glia with pyknotic nuclei
throughout this section.
Clear areas indicate edema
1: Numerous shrunken red necrotic cells
At this power, it can be seen that eosinophilic intranuclear inclusion bodies have
displaced chromatin to the periphery of the nucleus in some cells (2).
Arrows: Necrotic Cells
Cells containing intranuclear inclusion bodies (arrows)
Cell containing an intranuclear inclusion body (arrows)
Note that the chromatin has been pushed to the outer edges of the nucleus.
Cell containing an intranuclear inclusion body (arrows)
Brain section stained with antibody against herpes simplex
Even at this magnification, it is easy to pick out cells that are
positive for the virus (arrows).
Brain: Rabies
Lab 8, Case 3
Hippocampus from this case, low power
Brain tissue exhibiting edema and evidence of shrunken, necrotic neurons (arrows)
Shrunken neurons, higher power
One neuron appears to have an eosinophilic intracytoplasmic inclusion body (arrow).
Neurons containing variably-sized intracytoplasmic eosinophilic
inclusion bodies (arrows)
Neuron surrounded by inflammatory cells (lymphocytes and microglia)
This neuron has two intracytoplasmic eosinophilic inclusion bodies (arrows).
Spinal Cord: Poliomyelitis
Lab 8, Case 4
Spinal cord from this case
Note that the anterior horns (arrows) are almost completely devoid of neurons.
Spinal cord
Note the absence of motor neurons in the anterior horns and the gliosis (arrows).
Anterior Horn of Spinal Cord
Note the absence of motor neurons in the anterior horns and the diffuse gliosis.
Junction of white and grey matter
Note the inflammatory cellular infiltrate and tissue breakdown. There is significant loss
of neurons and myelin in this area.
Anterior horn with inflammatory cell infiltrate and total loss of neurons
Liver: Hepatitis B
Lab 8, Case 5
Liver from this case
This section was stained with a modified aldehyde fuchsin stain and counterstained with
H & E. Modified aldehyde fuchsin colors cystine-rich proteins, such as HBsAg and
elastic fibers, deep purple. The cytoplasm of most liver cells (and RBCs) stain red due
to eosin and have dark blue nuclei.
Note the severe congestion (RBCs in sinusoids) and the presence of occasional
hepatocytes with dark red/magenta-stained cytoplasm (arrows).
Periportal region exhibiting some inflammation and bile duct
hyperplasia
There is also congestion and some loss of hepatocytes with
disruption of the hepatic cords.
Numerous hepatocytes containing acumulations of magenta-staining
material in the cytoplasm (arrows).
Hepatocytes, the cytoplasm of which contain intracytoplasmic accumulations (arrows) of
hepatitis B surface antigen
Liver section from another case of Hepatitis B
In this H & E stained section, the typical “ground glass” appearance of the hepatocytes
can be appreciated (arrows).
Liver from previous image
Reacted with antibody to HBsAg
The hepatocytes that contain HBsAg stain brown.
Higher power of previous section that shows more clearly the HBsAg positive cells
Upon staining with H & E, these same cells exhibit a “ground glass” appearance, which
is due to the accumulation of HBsAg in the hepatocyte cytoplasm.
Low power of the same liver reacted with antigen for Hepatitis B core antigen (HBcAg)
The hepatocytes that contain HBcAg stain brown. Note that even at this magnification,
many brown-staining nuclei can be seen.
High power of previous section showing HBcAg positive nuclei (arrows)