Case Studies Flashcards
Benign tumors typically grow by…
EXPANSION
What is a pseudo capsule?
I don’t know…I need to look it up.
Can ulcerative tumors be benign?
Yes
General Rule: Benign Tumors Grow SLOW and Malignant Tumors Grow FAST…EXCEPT:
Histiosarcoma Young dogs (6 months old) with skin tumors that grow rapidly and typically ulcerate!
Common brain tumors in cats are actually tumors of the….
Meninges
Compression Atrophy in the Brain is Benign…Is the prognosis good or poor?
Poor…even thought the tumor is Benign the outcome does not have to be good!
When a cell has really deviated from normal, it becomes poorly…
DIFFERENTIATED…hallmark of Malignancy
Mammary tumors that shell out really hard pieces of bones, etc. in them are Benign or Malignant?
Benign
What are the main features of Malignancy you look for in Biopsy?
- Dividing Cells -> Abnormal Chromatin Structures
- Non-Differentiated Cells
- Ability of the Tumor to Metastasize ->what is often written in the report
Anaplastic Tumors…are they good or bad?
Bad…VERY bad! You have NO IDEA where they come from!
Young Dog…
Presenting Complaint: Sever Pain, Swollen Limb
Radiographs: tumor of the distal extremity
Send in a Biopsy to an Oncologist…Histology: variable nuclear size, some with mitotic figures, “hot area” of replication, material around the cells sequestering them
Tumor must be…
Osteosarcoma or Chondrosarcoma
Chondrosarcomas are not as eosinophilic.
When you suspect Osteo/Chondrosarcoma…you typically radiograph their chest. Why?
Cannon Ball Metastasis
On Necropsy - looks like diffuse, multifocal spots on the lung
…Typical of Metastatic Neoplasia
Granulomatous Lung Lesion that is the most common…
Tuberculosis
Tumor on the auricle of the heart…common site for…
Hemangiosarcoma
Thrombosis of the Pulmonary Artery often occur as a side effect of…
Endocrine Disorders of the Canine
