5th Year Prac 1: Lumps and Bumps

Question 1

What are three methods of immunphenotyping a large cell lymphoma?

Answer 1

Flow cytometry, immunocytochemistry, immunohistochemistry

Question 2

What are some tests performed to stage a large cell lymphoma?

Answer 2

Haematology, chest rads, abdominal ultrasound, aspiration or spleen/liver

Question 3

What does mucin look like?

Answer 3

Pale purple and homogeneous

Question 4

What does windrowing suggest?

Answer 4

In a viscous fluid

Question 5

What are some causes of eosinophilic lymphadenitis in a cat?

Answer 5

Parasitism, hypersensitivity, eosinophilic enteritis, hypereosinophilic syndrome, paraneoplastic phenomenon (secondary to MCT or lymphoma)

Question 6

What do cholesterol crystals look like?

Answer 6

Oblong or irregularly shaped negatively staining plates

Question 7

Why should epithelial inclusion cysts be excised?

Answer 7

Benign, but often rupture leading to a localised pyogranulomatous inflammatory response

Question 8

What can cause a sterile abscess?

Answer 8

Foreign body

Question 9

What further tests should you perform following excision of a MCT?

Answer 9

Aspirate draining LN, or ultrasound/aspirate spleen or liver

Question 10

What further tests should you perform after diagnosing a histiocytic sarcoma?

Answer 10

Evaluate draining LN and check abdomen for metastases

Question 11

Why must you take care when diagnosing lipoma through FNA?

Answer 11

Subcutaneous fat will produce the same cells