Scrotal Paragonimiasis in adults: Two case reports and review of literature

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Rationale:Paragonimiasis is a parasitic disease caused by Paragonimus in the lungs; it can be divided into intrapulmonary type and extrapulmonary type. Adult patients with scrotal paragnonimus are rarely seen clinically and not widely reported in the literature. Here, we report 2 cases of scrotal paragonimiasis in adults and their treatment process.Patient concerns:Two young males sought medical advice because of scrotal masses. Both patients had the previous history of eating uncooked river crabs and presented with palpable quasicircular nodules of about 1.5 × 1.0 cm in testicles, which were well-defined, resilient in tenderness. The bilateral inguinal lymph nodes were not enlarged.Diagnosis and interventions:The 2 patients underwent scrotal mass resection; postoperative pathology examination confirmed scrotum paragonimiasis. Both the patients were administered praziquantel after operation.Outcomes:They were followed up for 1 year and 4 years, respectively; both recovered well, free from recurrence. Scrotum color Doppler ultrasound examination found no obvious abnormality.Lessons:Adult patients with scrotum paragonimiasis are rarely seen clinically. Moreover, its clinical manifestations are not typical that leads to missed diagnosis and misdiagnosis. Diagnosis of the disease needs to combine with disease histories, manifestations, and relevant auxiliary examinations. But the diagnosis can be confirmed only by histopathological examination. The main method for treatment of scrotal paragonimiasis is antiparasitic treatment. However, health education is crucial to prevent this disease and relapse.

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