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Utvärdering av proteinglycerol och formaldehyd som agglutineringsmedel vid preparering av cellblock för lungcytologi
Jönköping University, School of Health and Welfare.
Jönköping University, School of Health and Welfare.
2024 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Evaluation of protein glycerol and formaldehyde as agglutination agents in the preparation of cell blocks for lung cytology (English)
Abstract [sv]

År 2020 stod lungcancer för högst andel cancer-relaterade dödsfall. Cellblockstekniken används inom diagnostik av vätskebaserad cytologi för att morfologiskt undersöka cellernas utseende och tumörcellers ursprung. I dagsläget upplever personal på Avdelningen för Klinisk patologi och cytologi Jönköping problematik vid klotformering av cellerna, vilket kan resultera i cellförlust. Syftet var att testa en ny metod för preparering av cellblock för lungcytologi samt utvärdera immunohistokemisk färgning med metoden. Studien behandlade 20 prover av pleuravätska och 20 lungcytologiprover som bearbetades till cellblock. Proteinglycerol och formaldehyd ersatte nuvarande agglutineringslösning bestående av koncentrerad formaldehyd och ättiksyra. Cellmängd beräknades på 39 snitt av två cytodiagnostiker, och graderades i tre nivåer från sparsam till riklig (1–3). Åtta cellblock selekterades för immunohistokemisk färgning. Det totala medelvärdet för cellularitet på snitten var måttlig (2,04). För pleuraproverna var medelvärdet 1,775 och för lungcytologiprover 2,315. Inga celler hittades på n=4 prover. Samtliga (n=8) immunohistokemiska färgningar med tillhörande kontroller godkändes av metodspecialist. Metoden ger snitt med tillräcklig cellularitet som fungerar väl med immunohistokemisk färgning. Metoden kan optimeras i relation till proteinförhållande och provtagning för att vid implementering bidra till en effektiviserad och individualiserad diagnostik.   

Abstract [en]

In 2020, lung cancer accounted for the highest proportion of cancer-related mortalities. The cell-block technique is used in liquid-based cytology to morphologically examine the appearance of cells and the origin of tumour-cells.  Staff at the Department of Clinical pathology and cytology in Jönköping are experiencing problems with clot-formation of cells, which can result in cell-loss. The aim was to test a new method for preparing cell-blocks for lung cytology, and evaluate immunohistochemical staining with the method. The study treated 20 pleural fluids and 20 fine needle aspirations that were processed into cell-blocks. Protein-glycerol and formaldehyde replaced the current agglutination solution consisting of concentrated formaldehyde and acetic acid. The cell-count on 39 sections were graded by two Cytotechnologists in three levels from sparse to abundant (1-3). Eight cell-blocks were selected for immunohistochemical staining. The mean cellularity was moderate (2,04). For the pleural and lung cytology samples the mean values were 1,775 and 2.315. No cells were found on n=4 sections. Every (n=8) immunohistochemical staining with associated controls was approved by method specialist. The method provides sufficient cellularity and works with immunohistochemical staining. It can be optimized in relation to protein-ratio and sampling to contribute to streamlined and individualized diagnosis if implemented.

Place, publisher, year, edition, pages
2024. , p. 26
Keywords [en]
cell-block, liquid-based cytology, preparation methods, egg white, lung cancer
Keywords [sv]
cellblock, vätskebaserad cytologi, prepareringsmetoder, äggvita, lungcancerdiagnostik
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:hj:diva-64614OAI: oai:DiVA.org:hj-64614DiVA, id: diva2:1864899
External cooperation
Avdelningen för patologi och cytologi, Länssjukhuset Ryhov, Jönköping
Subject / course
HHJ, Biomedical Laboratory Science
Supervisors
Examiners
Available from: 2024-06-13 Created: 2024-06-04 Last updated: 2025-10-13Bibliographically approved

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