Ovarian Hyperstimulation Syndrome (OHSS) Presented as Massive Hydrothorax.

Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic complication of controlled ovarian stimulation. Although considered uncommon, the severe form is potentially fatal. Patient can present with varied clinical presentation like pain abdomen, abdominal distension or tachypnea. Diagnosis is made by careful history, examination and investigation. Treatment is conservative and supportive care. Here, we have presented a case of severe OHSS which was missed initially, as the doctor who had first seen probably was not aware of this disease.