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Three atypical presentations of choriocarcinoma, occurring during and shortly after a coexistent viable pregnancy

Gestational choriocarcinoma is a malignant tumour originating from the trophoblastic tissue that can arise during or after any type of pregnancy, but most of the time follows a molar pregnancy. Characteristic for this tumour is its rapid haematogenous spread to various organs, causing atypical presentations often attributable to metastatic disease. We review three cases that occurred during and shortly after a coexistent intrauterine pregnancy. The patient of Case 1 presented with neurological symptoms due to hypercalcaemia, in Case 2 there was initially suspicion of appendicitis and the third patient presented with acute respiratory insufficiency. This case series illustrates that, although highly effective chemotherapy is available, choriocarcinoma can be life-threatening and accurate diagnosis is challenging but critical.