Report summary

University of Pennsylvania Department of Surgery in 2015-2026 reads as a 120-PI network with 479 internal PI collaborations. The dominant subject mix is Medicine as the leading field (58% of slots across 115 PIs; 115 labels), Surgery as the leading subfield (16% of slots across 50 PIs; 50 labels), and Diversity and Career in Medicine as the leading topic (3% of slots across 9 PIs; 9 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 29 PIs across distinct clusters. The leading PI names are Sunil Singhal (57.8 weighted works; Lung Cancer Diagnosis and Treatment, Nanoplatforms for cancer theranostics). The most visible ties are Jarrod D. Predina and Sunil Singhal (45 shared works, weight 27.9); Feredun Azari and Sunil Singhal (36 shared works, weight 25.6). The leading breakdown groups are group 1 with 10 PIs, 9 internal connections, weight 110.3, around Oncology, Gender Studies, Pulmonary and Respiratory Medicine, led by Rachel R. Kelz, Elinore J. Kaufman, Xiaowei Xu; group 2 with 10 PIs, 12 internal connections, weight 108.9, around Pulmonary and Respiratory Medicine, Radiology, Nuclear Medicine and Imaging, Immunology, led by Sunil Singhal, Jarrod D. Predina, Feredun Azari.