The diagnosis was conventional osteosarcoma, the most common malignant bone tumour, which in children tends to settle near the growth plates of fast-growing long bones. In an arm, that usually means the upper humerus, close to the shoulder. Atherley led the team that resected the tumour and reconstructed the bone using tissue taken from the patient's own body — a biological reconstruction rather than a metal implant.
That choice matters in a child. Grafted living bone thickens and remodels as the body grows. A fixed metal endoprosthesis does not, and buys its stability at the cost of repeated operations to lengthen it. The trade-off is that biological reconstruction demands a microsurgeon who can reconnect the graft's blood supply, vessel by vessel.
Which is why the team had two specialties in the room. Costantino Errani, an oncologic orthopedist, and Paolo Sassu, a microsurgeon, both came from the Istituto Ortopedico Rizzoli in Bologna, a bone-tumour reference centre since 1896 whose case registry runs to tens of thousands of records. Sassu was on the team that performed Scandinavia's first double hand transplant, in Sweden, in 2017. Panama's Ministry of Health and the Social Security Fund arranged their presence between them.
Surgery alone does not cure this disease. The standard sequence runs chemotherapy, resection, then chemotherapy again, and the operation is only the middle act. What changed on this occasion was geography. Complex pediatric work of this kind was once concentrated at the Hospital del Niño in Calidonia, a building dating to 1957; anything beyond it meant sending the patient out of the country, with everything that asks of a family — the visas, the cost, the months away.
Ciudad de la Salud opened in stages from 2019 and houses the Hospital Nacional de Especialidades Pediátricas Omar Torrijos Herrera. Health officials called the operation historic, and in the narrow institutional sense they meant that the technique had finally been performed inside Panama's borders.
The child understands it differently. There was an arm, and there still is.