T-Cell Prolymphocytic Leukaemia With Isolated Pulmonary Manifestation.

T-cell prolymphocytic leukaemia (T-PLL) is a rare haematologic malignancy. We report a case of T-PLL with isolated pulmonary manifestation, confirmed through video-assisted thoracoscopic surgery biopsy. This case highlights that isolated lung infiltration in T-PLL may reflect disease progression, requiring careful evaluation and timely therapeutic intervention.