Cloacal exstrophy and bladder exstrophy are congenital diseases that present with various congenital anomalies, such as abdominal wall defects, and require abdominal wall reconstruction. We performed abdominal wall reconstruction using the components separation technique (CS technique) and umbilioplasty at the same time. Two patients with cloacal exstrophy and one with bladder exstrophy underwent abdominal wall reconstruction using this method at our hospital between 2017 and 2021. The CS technique was performed as usual, and umbilioplasty was performed using superior excess tissue of the defect edge. Abdominal wall closure was possible in all cases without complications. The CS technique and primary umbilioplasty are functionally and aesthetically useful methods for abdominal wall reconstruction for abdominal wall defects due to cloacal exstrophy and bladder exstrophy; however, their indications are limited for large abdominal wall defects with immature muscles.

 Silicone breast implants (SBIs) are one of the main options for breast reconstruction and cosmetic breast augmentation; however, late complications, such as delayed hematoma, have been reported.
 We report a case of a 51-year-old woman who presented to our hospital 15 years after breast augmentation with silicone breast implants with the chief complaint of slow progressive swelling of the right breast. After examination, implant removal was performed due to implant breakage and hematoma. Thereafter, she underwent two additional cultured adipose-derived stem cell-enriched fat injections as revision breast augmentation. Postoperatively, the breast morphology was excellent, and the patient was highly satisfied with the results.
 Our findings suggest that fat injections are a treatment option for reconstruction after SBI removal because they are minimally invasive and cause little physical burden on the patient. Cultured adipose stem cell-enriched fat injections may also be an option for patients with the appropriate indications, based on their physical and social background.

 Animal bites often lead to infection because of the animal's oral flora and pathogens in the animal's environment. Treatment of animal bites is determined by the species involved and the location. Herein, we report two cases of badger bites. In Case 1, the patient's right forearm was bitten by a wild badger encountered at a nursery school. In Case 2, the patient's left middle finger was bitten by a wild badger encountered on a mountain. Both victims suffered bite injuries to their upper limbs. There are no reports regarding wild Japanese badger bites. Identifying the species involved can facilitate the identification of the pathogens specific to the species and trends in injuries from the species, which will help determine optimum treatments.

 Dog bites, while common in medical practice, are rarely reported to involve human external genitalia. Such injuries predominantly affect children and can cause severe sexual impairment. This report describes an exceptionally rare case of bilateral testicular damage caused by a dog bite. A 15-month-old boy was bitten on the pubic area by a domestic dog while he was unsupervised by his parents. Initial examination showed bilateral damage to the testes and scrotal skin; however, the urethra remained intact. We inserted a urinary catheter. The patient was subsequently transferred to our hospital for multidisciplinary treatment. Following the testicular defect confirmation, scrotal reconstruction was performed under general anesthesia. Five years postoperatively, the patient was able to urinate in a standing position without complications. When treating dog bites to the external genitalia, infection control is paramount. Alongside the potential need for testosterone replacement therapy due to trauma-induced hypogonadism, psychological support remains crucial.

 Bronchogenic cysts are congenital anomalies that usually arise in the mediastinum or lung, caused by abnormal budding or branching of tracheobronchial trees from the ventral foregut. Subcutaneous lesions of bronchogenic cysts (rare and commonly described as peristernal nodular masses) are hypothesized to represent misdirected respiratory mesenchyme. A midline cleft is a rare neck malformation characterized by a fusiform longitudinal tag, a nipple-like structure, and a blind orifice. We present a case of a 4-year-old boy with the chief complaint of a scar lesion in the anterior neck. His clinical manifestations resembled those of midline cleft. The scar lesion was surgically resected together with its subcutaneous cord. Pathological examination identified pseudostratified ciliated epithelia and bronchial glands in the lesion, leading to the diagnosis of subcutaneous bronchogenic cyst in the neck. This case suggests a relationship between midline clefts and subcutaneous bronchogenic cysts.