histopath lec - cell blocking

To process and preserve cellular materials

What is the main purpose of cell blocking in cytology?

Paraffin

Which of the following is the most commonly used medium for embedding in cell blocks?

Cytologic smears are inconclusive

Cell blocking is especially useful when:

Pleural fluid, Urine, Cerebrospinal fluid

Which of the following is typically used for cell block preparation?

10–50 mL

What is the ideal volume of pleural fluid for cell blocking according to Bancroft?

Filtration

The ThinPrep method uses which of the following to transfer cells to slides?

10% buffered formalin

What fixative is typically used for cell blocks?

Suspended cellular elements

What does a cloudy appearance of a cytologic specimen suggest?

Density gradient centrifugation

In the SurePath technique, what is used to separate diagnostic from non-diagnostic material?

Amber

What color suggests old hemorrhage and high protein content in body fluids?

Uniform encapsulation of cells

Which of the following is a benefit of the agar/Histogel method?

Rapid and standardized cell block production

What is the primary advantage of the Cellient system?

Papanicolaou

Which stain is best for nuclear detail in cytologic screening?

8 µm

The cell block section thickness should be:

Sample is suitable for cell block

The presence of a visible sediment after centrifugation indicates:

Plasma-Thrombin method

Which technique uses fibrin clot formation to trap cells?

Scant cellularity fluids like CSF

The cytospin technique is ideal for:

Improved diagnosis

A poorly labeled specimen can lead to all of the following EXCEPT:

Chromatin detail

In histology, nuclei stained dark blue or purple indicate:

Natural coagulation

What does the tissue clot technique rely on to trap cells?