Pulse - October 2024 - 13

PRACTICAL PATHOLOGY
Plexiform Vasculopathy in
Feline Cervical Lymph Nodes
Farshid Shahriar DVM, PhD, Dipl. ACVP - Lab For Pets, Tustin, CA
History and clinical findings:
A 3- year-old, female -spayed, DSH cat was submitted to a veterinary
hospital with history mass on thyroid region. To determine the nature of
the growth, it was removed surgically and submitted for histopathological
examination to Animal Diagnostic Laboratory. Grossly, the tissues
was an approximately 4x2.1x1.2 cm irregular to triangular shape welldefined
mass with dark discoloration. Multiple sections of the tissues
were processed for histopathological examination.
Histopathologic findings:
This is a lymphoid organ with diffusely reduces lymphoid tissue. The
remaining lymphoid cells are mostly marginated at the peripheral and
subcapsular areas and randomly distributed in the parenchyma (Fig. 1).
The parenchyma is expanded and replaced by extensive accumulations
of erythrocytes or capillary-like proliferations (Fig. 2, 3). Vessels are
lined by proliferative endothelial cells supported by a sparse to moderate
fibrous stroma. Endothelial cells have small elongated basophilic nuclei
and inconsipicuous cytoplasm no mitotic figure is noticed at 10 HPF
400x. The peripheral lymphoid follicles have reactive features.
Diagnosis:
Diagnosis of lymph node with central hemorrhage and vascularization
compatible with Plexiform Vasculopathy was made according to gross
and histological features.
Discussion:
This is a newly described entity in cats. It is mostly observed in cervical
lymph node with expansion of parenchyma by vessels and erythrocytes.
These features are consistent with a newly described entity in cats called
Plexiform Vasculopathy in feline cervical lymph nodes. The cause and
origin of this condition are still unknown however vasculature has
lymphatic origin. Possible pathogenetic mechanism included drainage
disturbances caused by tumors in the lymph node or in close vicinity,
thrombosis or congestive heart failure or angiogenic factors released by
a neoplastic process. These animals need to be monitored and examined
for possible neoplasia. P
Reference:
Nicole Jungwirth, Johannes Junginger, Christoph Andrijczuk , Wolfgang
Baumga¨rtner, and Peter Wohlsein. Plexiform Vasculopathy in Feline
Cervical Lymph Nodes. Veterinary Pathology 2018, Vol. 55(3) 453-456
Figure 1
Figure 2
Figure 3
PULSE
OCTOBER 2024
13

Pulse - October 2024

Table of Contents for the Digital Edition of Pulse - October 2024

Chapter Meetings & Calendar
President’s Perspective
Pulsepoints
SCVMA Profile
FEATURE STORY
Practical Pathology
UC Davis Update
Updates
Tools for Success
Industry Insights
Resources
Disease Table
From the SCVMA Office
Pulse - October 2024 - Cover1
Pulse - October 2024 - Cover2
Pulse - October 2024 - Chapter Meetings & Calendar
Pulse - October 2024 - 2
Pulse - October 2024 - President’s Perspective
Pulse - October 2024 - Pulsepoints
Pulse - October 2024 - 5
Pulse - October 2024 - SCVMA Profile
Pulse - October 2024 - 7
Pulse - October 2024 - FEATURE STORY
Pulse - October 2024 - 9
Pulse - October 2024 - 10
Pulse - October 2024 - 11
Pulse - October 2024 - 12
Pulse - October 2024 - Practical Pathology
Pulse - October 2024 - UC Davis Update
Pulse - October 2024 - Updates
Pulse - October 2024 - 16
Pulse - October 2024 - Tools for Success
Pulse - October 2024 - 18
Pulse - October 2024 - Industry Insights
Pulse - October 2024 - 20
Pulse - October 2024 - Resources
Pulse - October 2024 - Disease Table
Pulse - October 2024 - 23
Pulse - October 2024 - 24
Pulse - October 2024 - 25
Pulse - October 2024 - 26
Pulse - October 2024 - 27
Pulse - October 2024 - 28
Pulse - October 2024 - 29
Pulse - October 2024 - 30
Pulse - October 2024 - 31
Pulse - October 2024 - 32
Pulse - October 2024 - 33
Pulse - October 2024 - 34
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Pulse - October 2024 - 36
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Pulse - October 2024 - 38
Pulse - October 2024 - 39
Pulse - October 2024 - From the SCVMA Office
Pulse - October 2024 - Cover3
Pulse - October 2024 - Cover4
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