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Key Clinical Message: A self‐insertion of the styrofoam in urinary bladder is relatively rare. The diagnosis might be missed due to concealing the history of self‐insertion of the foreign body and the presence of gas in the bladder on CT and MRI. Younger patients with lower urinary tract symptoms should raise the index of suspicion. Transurethral self‐insertion of a foreign body into the bladder is the most common type of bladder foreign body, which is unlikely to be misdiagnosed. we report a case of self‐insertion bladder foreign body and present the symptoms, imaging, diagnosis and treatment in a 14‐year‐old Chinese boy of Han nationality. Younger patients with lower urinary tract symptoms should raise the index of suspicion. Endoscopic removal of foreign bodies can be a challenge. Patients with self‐insertion of foreign objects should undergo psychiatric evaluation to avoid repeated transurethral insertion of foreign bodies. [ABSTRACT FROM AUTHOR]

In response to the intensification of urbanization, characterized by increasingly dense land use, the proliferation of high-rise residences has emerged as a predominant housing solution, particularly evident in developed cities like those in China. With a primary aim of enhancing the residential living environment within high-rise structures, this study advocates for a comprehensive whole life cycle perspective. By employing digital technology and conducting experiments centered on a representative case study, this paper focuses on optimizing the functional layout of public activity spaces within high-rise residential projects. Specifically, this article aims to address challenges such as the inadequate configuration and articulation of various public spaces, along with the underutilization of peripheral activity areas. Central to the optimization efforts is the utilization of the Kruskal algorithm, which enables the analysis of flow lines and functions, ultimately leading to the derivation of optimal solutions. Through a detailed analysis of our case study, this paper provides actionable insights into enhancing the feasibility and effectiveness of public spaces within high-rise residential projects. Recognizing the pivotal role of public space layout in shaping residents' living experiences, the importance of addressing this issue early in the design phase was emphasized. By integrating scientifically driven digital technology solutions, smart, inclusive, and convenient communities that cater to the diverse needs of their inhabitants are aspired to be created. [ABSTRACT FROM AUTHOR]