RESUMO
AIM: The authors made a morphological assessment of musculoskeletal tissue samples from patients admitted in Surgical Departments of the Emergency County Hospital of Craiova, Romania, between 1990 and 2015, proved as presenting tuberculous lesions in the Department of Pathology of the same Hospital. MATERIALS AND METHODS: The studied material consisted of bone, joint and sometimes muscle tissue fragments resulted from biopsies or surgical excisions from 54 cases coming out of 841 patients investigated in the above-mentioned period of time, where the established histological diagnosis was tuberculosis (TB). For diagnostic confirmation, Ziehl-Neelsen staining has been used as a rule but, in some cases, immunohistochemistry was also used. RESULTS: TB lesions have prevailed in men and around the age of 50 despite the tissue involved (either bones or joints or both structures). Bone tissue, lower limb and right side of the body have been more frequently touched by the TB lesions. Axial bones (spine, ribs and hip bone) and knee joint have been the favorite sites. From morphological point of view, the inflammatory cellular population has been dominated by the epithelioid and giant Langhans cells that surrounded areas less or more extended of classical acidophilic fine granular necrosis. The fibrosis was observed more frequently around bone lesions, usually in an incipient phase. Overall, the granulomatous reaction was of reactive type but one should notice hyporeactive or areactive, disorganized reaction encountered quite often in bone or associated bone and joints lesions. CONCLUSIONS: Osteoarticular tuberculosis (OATB) has a complex and dynamic clinical morphological picture, which is still partly known, described and understood especially in the field of morphological changes. Further detailed and integrative analysis of both clinical and morphological aspects is required so the suspicion of diagnosis at the admission becomes as soon as possible certitude.