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Histopathological characterization of lung tumours at the University Teaching Hospital, Lusaka, Zambia: a pilot study


Mizinga Jacqueline Tembo
Violet Kayamba
Ephraim Zulu

Abstract

Background: There are limited data on histological classification of primary lung cancer from sub-Saharan Africa. Furthermore, the time trends of age-truncated incidence rates of lung cancer by histological phenotype in Zambia are also unknown.


Objectives: The objective of this study was to determine histological types of lung tumours at the University Teaching Hospital (UTH) in Lusaka, Zambia.


Methods: This was a retrospective pilot study of lung tumour biopsies collected from the histopathology laboratory at the UTH over a period of one year. Tissue sections were stained and when seen, lung cancer was classified using standard histological methods. Data were analysed using IBM SSPS version 23.


Results: A total of 23 lung cancer tissues were retrieved. Histological types included eleven (47.8%) squamous cell carcinoma (SCC), six (26.1%) adenocarcinoma, two (8.7%) small cell carcinoma, two (8.7%) large cell carcinoma, 1 (4.3%) inflammatory myofibroblastic tumours and 1 (4.3%) pleural pulmonary blastoma. The results showed that the most affected age group was 60-69 years with most of the histological subtype in this age group being SCC. There was no statistically significant difference of histological subtypes across age groups, p=0.12.


Conclusion: This study has shown that the most commonly diagnosed type of primary lung cancer is squamous cell carcinoma.
More data are needed to further corroborate this observation.


Keywords: Lung cancer; histopathology; Zambia.


Journal Identifiers


eISSN: 1729-0503
print ISSN: 1680-6905