Figure 3

a, b, c. Hystopathologic findings of the chest wall lesion showing typical findings of a tuberculosis infected tissue. Hematoxylin- and eosin-stained sections. a: bands of epithelioid histiocytes (palisading arrangement); b: Langhans giant cells; c: discrete granulomas; d: caseation necrosis (acellular pink areas of necrosis with karyorrhectic debris). Kind concession of Vellone VG, Department of Pathology, Policlinico Gemelli, Catholic University, Rome, Italy.