Markus Denzinger, Sandra Steininger,Niels Zorger,Patricia Reis Wolfertstetter,Christian Knorr, Posttraumatic Intramuscular Nodular Fasciitis in a 7-Year-Old Boy: Case Report and Review of the Literature Surgical Case Reports 2021 2613-5965 http://dx.doi.org/10.31487/j.SCR.2021.06.06 https://www.sciencerepository.org/posttraumatic-intramuscular-nodular-fasciitis-in-a-7-year-old-boy_SCR-2021-6-106 Abstract: Nodular fasciitis is a rare disease, and its diagnosis is difficult. We present a case report of a seven-year-old child with progredient swelling of the left pectoralis muscle three weeks after trauma. After histopathological diagnosis, we performed complete resection. Normally, a conservative approach with regular follow-up is regarded as appropriate since nodular fasciitis does have the capability to regress spontaneously. Since recent publications indicate the possibility of malignant transformation, the complete primary resection also has to be discussed as therapy of choice.Keywords: Nodular fasciitis, nodular pseudosarcomatous fasciitis, pseudosarcomatous fasciitis, subcutaneous pseudosarcomatous, fibromatosis