Mechanism for the Rapid Spontaneous Resolution of an Acute Subdural Hematoma and Transformation into a Subdural Hygroma

Spontaneous Regression of Subdural Haematoma Due to Redistribution in a Young Child: a Case Report

“…7,8 The mixing of blood with cerebrospinal fluid and subsequent washout serves to dilute the bleed and carry it into the subarachnoid, subdural or spinal subdural space. 9,10 The presence of cerebral atrophy with prominent subarachnoid spaces may help the dilution of subdural haematoma. 11 Rarely, the haematoma can drain into the subgaleal or diploic space in the presence of skull fracture and associated dural injury.…”

Spontaneous Regression of Subdural Haematoma Due to Redistribution in a Young Child: a Case Report

“…7,8 The mixing of blood with cerebrospinal fluid and subsequent washout serves to dilute the bleed and carry it into the subarachnoid, subdural or spinal subdural space. 9,10 The presence of cerebral atrophy with prominent subarachnoid spaces may help the dilution of subdural haematoma. 11 Rarely, the haematoma can drain into the subgaleal or diploic space in the presence of skull fracture and associated dural injury.…”

Rapid Spontaneous Resolution of Large Acute Subdural Hematoma

“…After then sporadic case reports were continued until recent years. 1 2 7 9 10 14 16 17 19) Öğrenci et al 15) summarized total 12 pediatric cases from 1986 to 2015. Fujimoto et al 7) analyzed 18 patients of rapid spontaneous resolution of ASDH between 2006 and 2012.…”

“…So called “low-density band” between ASDH and skull seen in CT scan suggests such CSF collection. 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma.…”

“… 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma. 1 5 8 12 13 19) Lee et al 12) suggest that the expanded subarachnoid space due to brain atrophy can be a favorable factor which could affect the dilution and redistribution of the hematoma.…”

Rapid spontaneous resolution of the acute subdural hematoma: Case series and review of literature

“…In some cases, neurological condition remained stable [8,10,17,21,28,33] or improved gradually [12,15,16,18,19,24,29,35] The death of one such patient reported by Balik et al had been correlated with hemodynamic instability and sudden cardiac arrest due to sympathetic hyperactivity. On postmortem examination of the above case, redistribution of hematoma in spinal subdural space and ischemic changes in the pons was detected.…”

Spontaneous Regression of Subdural Haematoma Due to Redistribution in a Young Child: a Case Report

“…7,8 The mixing of blood with cerebrospinal fluid and subsequent washout serves to dilute the bleed and carry it into the subarachnoid, subdural or spinal subdural space. 9,10 The presence of cerebral atrophy with prominent subarachnoid spaces may help the dilution of subdural haematoma. 11 Rarely, the haematoma can drain into the subgaleal or diploic space in the presence of skull fracture and associated dural injury.…”

Rapid Spontaneous Resolution of Large Acute Subdural Hematoma

“…After then sporadic case reports were continued until recent years. 1 2 7 9 10 14 16 17 19) Öğrenci et al 15) summarized total 12 pediatric cases from 1986 to 2015. Fujimoto et al 7) analyzed 18 patients of rapid spontaneous resolution of ASDH between 2006 and 2012.…”

“…So called “low-density band” between ASDH and skull seen in CT scan suggests such CSF collection. 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma.…”

“… 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma. 1 5 8 12 13 19) Lee et al 12) suggest that the expanded subarachnoid space due to brain atrophy can be a favorable factor which could affect the dilution and redistribution of the hematoma.…”

Rapid spontaneous resolution of the acute subdural hematoma: Case series and review of literature

“…In some cases, neurological condition remained stable [8,10,17,21,28,33] or improved gradually [12,15,16,18,19,24,29,35] The death of one such patient reported by Balik et al had been correlated with hemodynamic instability and sudden cardiac arrest due to sympathetic hyperactivity. On postmortem examination of the above case, redistribution of hematoma in spinal subdural space and ischemic changes in the pons was detected.…”

Spontaneous Regression of Subdural Haematoma Due to Redistribution in a Young Child: a Case Report

“…7,8 The mixing of blood with cerebrospinal fluid and subsequent washout serves to dilute the bleed and carry it into the subarachnoid, subdural or spinal subdural space. 9,10 The presence of cerebral atrophy with prominent subarachnoid spaces may help the dilution of subdural haematoma. 11 Rarely, the haematoma can drain into the subgaleal or diploic space in the presence of skull fracture and associated dural injury.…”

Rapid Spontaneous Resolution of Large Acute Subdural Hematoma

“…After then sporadic case reports were continued until recent years. 1 2 7 9 10 14 16 17 19) Öğrenci et al 15) summarized total 12 pediatric cases from 1986 to 2015. Fujimoto et al 7) analyzed 18 patients of rapid spontaneous resolution of ASDH between 2006 and 2012.…”

“…So called “low-density band” between ASDH and skull seen in CT scan suggests such CSF collection. 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma.…”

“… 2 3 4 5 6 7 8 9 10 11 12 13 16 17 19 20) 2) Redistribution of hematoma to another space; contralateral intracranial space, intradiploic space and/or subgaleal space through the skull fracture, spinal subdural space, by raised pressure caused by brain swelling, other intracranial hemorrhages, and/or subdural hematoma itself. 1 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20) It has been claimed also that brain atrophy leads to widening of subarachnoid space, which facilitates the removal of ASDH by aiding the redistribution of the hematoma. 1 5 8 12 13 19) Lee et al 12) suggest that the expanded subarachnoid space due to brain atrophy can be a favorable factor which could affect the dilution and redistribution of the hematoma.…”

Rapid spontaneous resolution of the acute subdural hematoma: Case series and review of literature

“…In some cases, neurological condition remained stable [8,10,17,21,28,33] or improved gradually [12,15,16,18,19,24,29,35] The death of one such patient reported by Balik et al had been correlated with hemodynamic instability and sudden cardiac arrest due to sympathetic hyperactivity. On postmortem examination of the above case, redistribution of hematoma in spinal subdural space and ischemic changes in the pons was detected.…”