September 27, 2018, 6:50 pmZhaire SmithG/F, Philadelphia Sixers
Zhaire Smith underwent a successful thoracoscopy to address an allergic reaction.
Considering the procedure was the result of a reaction to a food product, we'd guess that it had something to do with his digestive system — a thoracoscopy is generally an exam or biopsy of something in the thoracic cavity, which is basically the torso. Smith is already sidelined through December because of a Jones fracture so this shouldn't affect his availability.
Source: Keith Pompey on Twitter