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Subdural empyema is a surgical emergency, which, if not recognized and managed promptly, is rapidly fatal. The clinical features, diagnosis, infecting organisms, treatment and results in 15 patients with subdural empyema admitted to the University and Saskatoon City hospitals between 1956 and 1982 are evaluated. There were 11 males and 4 females; 80% were under 50 years of age. Paranasal sinusitis in six patients was the most common cause of the condition. The most frequent presenting features were fever, headache, vomiting, seizures and motor deficit. Preoperative diagnostic methods included skull roentgenography, cerebrospinal fluid studies, electroencephalography, cerebral angiography and computerized tomography. Cultures of the pus were positive for bacteria in 13 of the 15 patients. Drainage of the empyema was accomplished through multiple burr holes, craniotomy and craniectomy. Follow-up ranged from 1 month to 15 years. Eleven patients recovered with minimal or no neurologic deficit, 2 patients had permanent major deficits and 2 died. Successful management of subdural empyema depends on early diagnosis, prompt evacuation of the pus and appropriate antibiotic therapy.
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PMID:Subdural empyema: a retrospective study of 15 patients. 614 82

A 76-year-old female was admitted with a headache. She had no febrile course before admission. Computed tomography (CT) demonstrated bilateral frontal hypodense areas without enhanced rim. She was made a diagnosis of a chronic subdural hematoma. Because her general condition was poor and she had no neurological deficit, she was planned to be treated conservatively. On a few days after the admission, she was suffered from agranulocytosis. However, leukopenia disappeared within a few days by the effective treatment and any neurological deficit was not observed in these period. On thirty days after the admission, she rapidly became semicomatous state and showed left side hemiparesis. A subdural empyema was demonstrated by the subsequent operation. Both culture of subdural fluid and urine yielded Escherichia coli. Her neurological deficits cleared after the operation and subsequent antibiotic therapy. We speculated that infection of urinary tract produced a E. coli bacteremia and subsequently infected subdural hematoma occurred by this microorganism. We stressed that when the neurological deterioration was observed during the conservative treatment of chronic subdural hematoma, infected hematoma would be one which should be one differentiated from an enlargement of hematoma. The mechanisms of the rim enhancement observed at CT are also discussed.
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PMID:[A case of infected subdural hematoma (subdural empyema) secondary to septicemia caused by agranulocytosis]. 614 37

In 17 cases of sinusitis-induced subdural empyema, all but 5 occurred in boys or men aged 13 to 33 years. Clinical features were headaches and fever (14 patients), nuchal rigidity (10), and seizures (8). Seven patients had periorbital cellulitis, and 15 had radiographic clouding of at least one sinus. Only five patients had a history of sinusitis. CT identified the empyema accurately in seven patients but failed in two patients who developed subdural empyema while being treated for sinusitis-induced cerebritis. Ten patients had specific bacteriologic etiologies determined by culture of empyema, blood, or sinuses.
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PMID:Sinusitis: induced subdural empyema. 668 53

A 42 years old woman was noticed to have an abnormal shadow in the left lower field of lung at the time of periodical chest radiographic examination in July 1979. She didn't show any signs or symptoms of inflammation such as fever, increased rate of blood sedimentation, leukocytosis and so on by that time. Four weeks prior to admission she started to complain of mild but continuous headache and then developed anorexia, dysarthria and weakness in the right half of the face. She was admitted to the Kyoto University Hospital on September 14, 1979. On admission, slight bilateral papilledema, right hemiparesis and total dysphasia were present. She was afebrile and no abnormal finding in serological examination was shown. A heterogenously enhanced mass was demonstrated by CT scan in the left posterior frontal lobe, which was surrounded by severe cerebral edema. A provisional diagnosis of metastatic tumor from the lung was made. At the time of craniotomy, an abscess cavity was found and aspirated. Then the radical extracapsular ablation and external decompression was carried out. Histologically many Nocardia species were identified in the abscess cavity. The patient was treated by administration of a mixture of trimethoprine and sulfamethixazole (Bakter), and minocycline. Subsequently the developed Corynebacterial epidural empyema which was successfully evacuated two months after the first operation. She had been placed on Baktar for ten months since the second operation. She presented no sign of recurrence in six months after the cessation of drugs.
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PMID:[Nocardia brain abscess: a case report (author's transl)]. 707

Because subdural empyema (SDE) is an unusual central nervous system infection, recognition is not always prompt. Consequently delays can allow a serious but curable infection to become irreparably damaging or even fatal. This condition, particularly in the early stages, is relatively easy to treat. Personal experience with six patients during the past 3 years promoted us to review the data from UCLA and its affiliated hospitals. Among the 23 cases of SDE reviewed, the predisposing factor in 16 was sinusitis, mastoiditis, or otitis media. The clinical presentation, encompassing a systemic febrile illness, headache, and neurological deficit, was monotonously uniform. The high incidence of paranasal sinus involvement in the adult, middle ear infections in infants, and seizures in 15 patients comprised further clinical clues suggesting the diagnosis. Although usually diagnosed as an intracranial inflammatory process, an initial failure to suspect a purulent collection in the subdural compartment was typical. Although the findings of definitive diagnostic studies (computed tomography or angiography) are strikingly positive in advanced cases, in the earlier stages of this disorder they may be subtly abnormal. Because the mortality and morbidity rates, in some measure, depend on the stage at which the process is arrested, the real challenge lies in making a prompt diagnosis. The most favorable results are associated with early, decisive surgical treatment.
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PMID:Subdural empyema--importance of early diagnosis. 744 93

Two hundred and nineteen patients, with intracranial complications of sinusitis, are presented. Sinusitis is still a life-threatening condition and if neglected, or mismanaged, can lead to intracranial complications that result in a high mortality and morbidity. Twenty-two patients had meningitis, 127 subdural empyema, 38 brain abscess, 15 combined brain abscess and subdural empyema and 17 extradural empyema. The diagnosis of intracranial abscess and sinusitis was made with the aid of a CT scan, and that of meningitis on cerebrospinal fluid microscopy, chemistry and culture. The most frequent presenting signs were fever (68 per cent) and headache (54 per cent). The most common localizing neurological sign was hemiparesis (35.5 per cent). Orbital inflammation was present in 41.5 per cent of patients. Treatment entailed immediate, appropriate, intravenous antibiotic therapy and prompt surgery, performed within 12 hours of admission. In patients with meningitis, the surgery entailed surgery of the sinus disease only. In patients with subdural empyema, brain abscess and extradural empyema, evacuation of the primary source of infection by the radical frontoethmoidectomy approach, immediately after drainage of the intracranial collection of pus, was carried out. There were 35 deaths (16 per cent). The highest mortality rate was recorded in patients with meningitis (45 per cent) followed by brain abscess (19 per cent) and subdural empyema (11 per cent). Despite advances in medicine, i.e. antibiotics and CT scan for early and accurate diagnosis, the mortality from sinogenic intracranial complications has remained significant. This can only be eliminated through education.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Sinogenic intracranial complications. 749 46

Forty-five patients under the age of 20 years with rhinogenic subdural empyema were treated at Groote Schuur Hospital and Red Cross War Memorial Children's Hospital between 1979 and 1991. Thirty-two were male and 13 female. The majority were between 13 and 19 years of age. Headache was the predominant symptom in 41 patients. Vomiting occurred in 15 and 21 presented with seizures, 2 in status epilepticus. Thirty had swinging pyrexias and 26 neck stiffness while only 14 had focal neurological signs. Swelling of the face or orbit was seen in 24. Twenty-two had depressed levels of consciousness and 7 had Glasgow Coma Scale (GCS) values below 11/15. White cell counts and erythrocyte sedimentation rates were raised in all cases. Twenty-three patients underwent lumbar punctures despite the inherent danger in this procedure. Cerebrospinal fluid analysis showed a pleocytosis in all cases; no organisms were cultured in any of the specimens. The diagnosis in all cases was made by contrast-enhanced computed tomography. Twenty-five patients underwent multiple burrholes, 9 small craniectomies and 11 craniotomies. Thirty-four patients made an excellent recovery. All of the 6 patients who died had GCS values below 11 at the time of their surgery.
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PMID:Rhinogenic subdural empyema in older children and teenagers. 757 Feb 36

An analysis of 19 confirmed cases of subdural empyema treated in our unit during a 29-month period ending in May 1990 revealed that this was a disease of young males (mean age 19.6 yrs: male:female ratio 5:1) that was frequently associated with paranasal sinusitis. We have identified a characteristic symptom complex which when present together with focal neurological deficits makes the diagnosis highly probable. This consists of fever, headache, altered level of consciousness and frontal scalp swelling. In a practice setting where neuroradiological confirmation of the diagnosis is not always practicable, this clinical syndrome is helpful and should prompt early burr hole exploration of the subdural space. The only deaths (2 patients; 11%) occurred in patients who presented in coma. The remaining were either normal (6 patients) or continued to improve after treatment, which consisted of multiple burr hole drainage, broad spectrum antimicrobial treatment and eradication of the source of infection.
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PMID:Intracranial subdural empyema: burr hole exploration for diagnosis and treatment. 783 22

Paranasal sinusitis complicated by subdural empyema (SDE) in a 14-year-old boy is described. He presented with fever, headache and vomiting. X-rays revealed left maxillary and bilateral frontal sinusitis. While in the emergency room he had seizures; CT-scan showed an air leak adjacent to the right frontal sinus. Despite intravenous antibiotics, left hemiparesis developed and repeat CT showed interhemispheric SDE. Frontal craniotomy was performed and a large amount of purulent material was drained. Recovery followed 4 weeks of intravenous antibiotic treatment without neurologic sequelae. SDE is a rare complication of paranasal sinusitis and constitutes approximately 20% of all localized intracranial infections. Clinical features include fever, headache, vomiting, convulsions and neurologic deficits. Modern imaging methods and combined surgical and antibiotic treatment have lowered mortality to 5-10%. A high index of suspicion is important for early diagnosis and successful treatment.
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PMID:[Subdural empyema complicating sinusitis]. 791 Nov 17

Epidural empyema is an unusual cause of headache that may be encountered in the emergency department. The collection of suppurative fluid usually results from local spread of sinusitis, although many other predisposing factors have also been described. Patients with epidural empyema usually present with nonspecific cephalalgia that may be accompanied by fever and leukocytosis but is unlikely to be associated with focal neurological findings. The case of an adolescent who presented to our emergency department twice in 6 days with persistent headache is reported; cranial computed tomography performed on the second visit demonstrated bilateral epidural empyema. This entity is uncommon, but may certainly be encountered by the emergency physician.
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PMID:Bilateral epidural empyemas in an adolescent. 803 28


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