By S. Tsementzis
This pocket-sized Thieme flexibook bargains fast, trustworthy rationalization of a large and infrequently complicated array of providing signs. The ebook offers very important diagnostic details in a handy tabular structure that leaves "no stone unturned" in contemplating the rarer probabilities, and is tremendously useful in attaining a correct prognosis. convenient and accomplished, it truly is excellent for physicians fascinated about interpreting and admitting sufferers who require neurosurgical intervention.
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Extra resources for Differential Diagnosis In Neurology And Neurosurgery
Usage subject to terms and conditions of license. , boat or keel-shaped head due to premature closure of the sagittal suture Trigonocephaly Triangular head; angular and pointed forehead with a prominent midline bony ridge, due to premature closure of the metopic suture Frontal plagiocephaly Ipsilateral flattened frontal region with contralateral outward bulging and marked facial asymmetry—“harlequin eye”—due to unilateral coronal suture synostosis Occipital plagiocephaly Flattening of the involved occipital region with prominence in the ipsilateral frontal region due to unilateral lambdoid suture synostosis Oxycephaly, turriTall and pointed head with overgrowth of bregma and cephaly, or acrocephaly flat, underdeveloped posterior fossa, due to premature closure of the coronal and lambdoid sutures Brachycephaly Short, wide, slightly high head due to bilateral coronal suture synostosis Triphyllocephaly, clover- Trilobular skull with temporal and frontal bulges due leaf head, or “kleeblatt- to intrauterine closure of the sagittal, coronal, and schädel” lambdoid sutures Associated Craniofacial Syndromes Crouzon’s syndrome Coronal synostosis, maxillary hypoplasia, shallow orbits with exophthalmos, hypertelorism and often strabismus.
Diseases Affecting the Temporal Bone – Carcinoma of the middle ear 17 This is associated with chronic otitis media in 30% of cases; pain and bleeding appear late. Bone destruction is seen in 12%, particularly in the temporal fossa of the temporomandibular joint The jugular foramen is enlarged and destroyed; a very vascular lesion – Glomus jugulare tumor – Nasopharyngeal tumor invasion – Rhabdomyosarcoma This is a tumor of children and young adults, and it has a predilection for the nasopharynx.
Due to lack of a hemosiderin rim, central large hemorrhage and calcification is extremely difficult to diagnose with MRI Caroticocavernous fistula or dural malformation Cavernous sinus throm- May occur after a septic process, after an intervenbosis tional procedure or after surgery. CT shows an irregular filling defect in an irregularly enhancing sinus. MRI without enhancement demonstrates a high intensity in the occluded sinus; enhancement is not helpful, because unthrombosed regions of the sinus enhance, and blood clot also has a high intensity Infectious/inflammatory lesions Parasitic infections Abscesses Cysticercosis and echinococcus parasitic cysts in this region are usually inhomogeneous, and may be calcified These can occur after surgery, but also in situations that predispose to bacterial infection, including sinusitis.