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Introduction:Acute generalized exanthematous pustulosis is characterized by small, sterile, non-follicular, and sudden-onset pustular reactions on an erythematous surface. It typically involves intertriginous regions and the trunk and is usually accompanied by itching and a feeling of pain in the lesion areas. Often pharmacological treatments and frequent viral eruptions, including enterovirus, coxsackie, Epstein-Barr virus, and hepatitis B, play a role in the etiology of the disease. Case report: Here, we present the case of acute generalized exanthematous pustulosis in a 17-year-old young woman triggered by the 1 st dose of COVID19 mRNA BioNTech vaccine. Conclusions: We are reporting a rare case of vaccine-related acute generalized exanthematous pustulosis, associated with a COVID-19 vaccination.

Immature ovarian teratoma is a rarely seen germ cell tumor. Although testicular germ cell tumors and their association with chemotherapeutic retroconversion have been reported at a substantial rate of 2%-8% in the literature, the retroconversion of immature ovarian teratoma to mature teratoma is quite uncommon. It is important to reveal this conversion by biopsy for establishing a subsequent treatment chart of patients. A 45-year-old female patient was operated on due to immature ovarian teratoma. Then, she was re-operated on, because local recurrence occurred during the drug-free follow-up period, and systemic chemotherapy was administered. Liver metastasis was detected after chemotherapy, and the liver biopsy demonstrated a mature teratoma. This case is presented in this paper. DISCUSSIONGerm cell tumors mostly occur below the age of 30 years and in childhood. They are tumors with characteristics of early metastasis, frequent recurrence, and a high rate of mortality. Immature teratoma constitutes 3% of