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P1‐66: Metastatic pulmonary calcification mimicking miliary pulmonary tuberculosis: A case report

samples from an endobronchial lesion, with high sensitivity and specificity for malignancy. However, we have to be aware that this method may be providing too peripheral or inadequate tissue sample, leading to possible false positive or false negative results. Our case was discussed with pathologist who concluded that the endobronchial biopsy sample was from the periphery of the tumour itself in which there were proliferation of spindle cells with myxoid stroma. Conclusion: It is therefore important for clinicians to be mindful that there are pitfalls in every diagnostic method. References 1. Lundeen KS, Raj MS, Rajasurya V, et al. Pulmonary Hamartoma. [Updated 2020 Jul 10]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021. 2. Ahmed, Saman et al. “Endobronchial hamartoma; a rare structural cause of chronic cough.” Respiratory medicine case reports vol. 22 224-227. 24 Aug. 2017.