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We report an extremely rare case of an endodermal cyst of the cranio-cervical junction located dorsally to the brainstem and upper cervical spine in a 27-year-old female presented with occipital headache, vertigo and pain in both shoulders. Neurological examination showed neck stiffness with bilateral XIth nerve palsy. Magnetic resonance imaging revealed a cystic lesion at the cranio-cervical junction and slight compression of the brain stem. The lesion was totally removed through the posterior approach. The histological diagnosis was endodermal cyst. To our knowledge, the only one such case has been reported in the literature.

We report an extremely rare case of an endodermal cyst of the cranio-cervical junction located dorsally to the brainstem and upper cervical spine in a 27-year-old female presented with occipital headache, vertigo and pain in both shoulders. Neurological examination showed neck stiffness with bilateral XIth nerve palsy. Magnetic resonance imaging revealed a cystic lesion at the cranio-cervical junction and slight compression of the brain stem. The lesion was totally removed through the posterior approach. The histological diagnosis was endodermal cyst. To our knowledge, the only one such case has been reported in the literature.

Dual antiplatelet therapy (clopidogrel and acetylsalicylic acid) is a standard for the embolization of planned intracranial aneurysms with CNS stent due to the possibility of stent thrombus formation. All anti-aggregation drugs, including those listed, have bleeding as a side effect. Three patients with aneurysm had an elevated response to antiplatelet therapy with clopidogrel, which was confirmed by a multiplate test on the "VerifyNow" system. After reducing the dose of clopidogrel or after interrupting it, with the introduction of low molecular weight heparin for the duration of five days, aneurysms were successfully resolved by intracranial implantation of the stent. Perioperative angiograms and postoperative CT angiograms have verified hematomas at the place of punction of the femoral artery. Bleeding was resolved by the femoral artery suture by a vascular surgeon. All patients were discharged home without further complications and with dual antiplatelet therapy. By measuring the platelet function in vitro, the degree of inhibition of platelet activity achieved by the action of the drug can be assessed. A specific test can identify those patients who are highly responsive to the drug with increased platelet reactivity and the possibility of increased risk of bleeding. Our suggestion is to reduce the dosage of clopidogrel or to leave it out for 24 hours with preventive doses of low molecular weight heparin or to change the strategy of treatment of intracranial aneurysm, i.e. avoiding implantation of CNS stent.

Cavernomas are benign vascular malformations, and about 50% of all cases are multiple. The hereditary form of brain cavernomas is uncommon, and it is certainly under diagnosed. Another entity is familial cerebral cavernous malformation syndrome. It is defined as the occurrence of multiple cavernomas or the occurrence of cavernomas in at least two members of a family or the presence of a mutation in one of the three genes causing familial cerebral cavernous malformation syndrome. We present a Serbian family in which three consecutive members of family had brain cavernoma. According to our knowledge, this is second case of hereditary cavernoma described in Serbian population.

Pallister-Hall syndrome (PHS) is extremely rare autosomal dominant disorder with typical clinical features such as presence of polydactyly, hypothalamic hamartoma, bifid epiglottis, anal, renal, genitourinary and pulmonary abnormalities, mainly located in the midline of the body. Spontaneous cerebrospinal fluid (CSF) rhinorrhea is also a rare condition, and it is used to describe nasal discharge of CSF unrelated to previous trauma, localized tumour, surgery, or previous radiation therapy. The exact cause is not yet fully understood. We report a case of adult female patient previously diagnosed with PHS and late onset of spontaneous nasal liquorrhea, due to defect in the anterior skull base. Although it can be incidental finding, we believe that described defect in the body midline can be another presentation of congenital craniofacial abnormality which are common in PHS.

Multiple brain abscesses are exceedingly uncommon in newborns and represent a serious medical problem associated with high morbidity and mortality. Treatment is also controversial issue, and can require surgery, abscess aspiration, antibiotic therapy, and eradication of the primary source. We report a case of successfully treated multiple brain abscess in a newborn with combined therapy which consisted of abscess aspiration and prolonged antibiotics. Patient developed hydrocephalus as late complication which was also successfully treated with ventriculoperitoneal shunt.