In rare cases, anticoagulants can cause hemotympanum with no underlying cause or injury. Experiencing a head injury while taking anticoagulants, increases the likelihood of hemotympanum. Ear infections
Frequent ear infections, ongoing inflammation and fluid buildup can increase the risk of hemotympanum. Treatment
Skull fractures usually heal on their own, but they can also cause several complications. Cerebrospinal fluid leaking out of the ear involves a higher risk of developing meningitis. Treatment may include corticosteroids, antibiotics, or surgery. == References ==
Placental site trophoblastic tumor is a form of gestational trophoblastic disease, which is thought to arise from intermediate trophoblast.The tumor may secrete human placental lactogen, and result in a false-positive pregnancy test.A placental site trophoblastic tumor is a monophasic neoplasm of the implantation site intermediate trophoblast, and usually a benign lesion, which comprises less than 2% of all gestational trophoblastic proliferations. Preceding conditions include molar pregnancy (5%). Compared to choriocarcinoma or invasive mole, hemorrhage is less conspicuous and serum β-HCG level is low, making early diagnosis difficult. Immunohistochemistry: Often stains with hPL, keratin, Mel-CAM, EGFR. Treatment
Because chemotherapy is ineffective; the patient should undergo hysterectomy. Prognosis
10–20% of cases metastasize leading to death. References


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