Tissue Processing tissue collection BMLT

Histopathology in Practice BMLT

Sample Reception,
Sample records
Labelling of histology

Histology

The science concerned with the microscopic structure of tissues and organs in relation to their function.

Also called microanatomy

Specimen Reception

Specimen Unpacking

Specimen QC

Specimen Labelling

Sample Documenting

Cassetting

Specimen Dissection the stage

Dissecting props

Cutting board
Forceps
Ruler
Scalpel / knives / saw
Inks / dyes
Cassettes / lids
Biopsy pads / tissue
Filter bags
Weighing scales

Cut-up dictation

Morphology” computer system

“Dragon” dictation system

Hands-free

Just scan the barcode and away we go!!

Specimen Categories

A. Specimens only requiring transfer from container to tissue cassette.

B. Specimens requiring transfer but with standard sampling, counting, weighing or slicing.

C. Simple dissection required with sampling needing a low level of diagnostic assessment and/or preparation.

D. Dissection and sampling required needing a moderate level of assessment.

E. Specimens requiring complex dissection and sampling methods

Category A Specimens

Category B Specimens

Catagory C Specimens

Category D Specimens

Category E Specimens

Specimen Sampling

Literally, taking a sample of the tissue
Representative

Generally, fewer blocks required if the tissue looks uniform throughout (for benign cases)

Sampling “rules”

Specimen Storage

Ventilated storage units
Largest buckets lower shelves

Units are in date (week) order

5-weeks’ worth of storage

Only authorised specimens are discarded after 5 weeks

Any outstanding cases are stored separately until further notice