Type I Cutaneous Meningioma (Rudimentary Meningocele) With Intradural Attachment to the Phylum Terminale

Mazloom, Sean; Holliday, Alex C.; Coman, Garrett; Chavan, Rahul N.; Kolodney, Michael S.; Grider, Douglas J.

doi:10.1097/dad.0000000000000646

Cited by 5 publications

(18 citation statements)

References 13 publications

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“…8,11 Cutaneous meningiomas are the meningiomas that occur in skin and subcutaneous tissues, which can be primary involvement or secondarily due to extension of intracranial meningiomas and account for less than 2% of the cases. 2,11 This lesion was first reported in 1904 but it was first described in the English literature in 1956. 12 These subset of meningiomas usually follow trauma, present as subcutaneous nodules and can be clinically misdiagnosed as lipomas or sebaceous cysts.…”

Section: Discussionmentioning

confidence: 99%

“…Meningiomas are the commonest primary benign neoplasms originating from the arachnoid cap cells. 2 They form around 15% of surgically intervened CNS neoplasms. They usually occur in adults and with the exception of congenital meningiomas, they are rare in childhood.…”

Section: Discussionmentioning

confidence: 99%

“…1 In the 1730s, the first case of extradural meningioma was documented. 2 Extracranial meningiomas can occur due to 1) direct spread of the CNS meningiomas into the surrounding tissues, 2) as metastatic meningiomas or 3) primary ectopic meningiomas. 11 Ectopic meningiomas occur at scalp, head, neck, orbit, ear, lung, mediastinum etc.…”

Section: Discussionmentioning

confidence: 99%

“…14 Midline or paramidline located similar lesions should be differentiated from dermal sinus tract, myelocele and meningomyelocele, perineuromas, lipomas, fibrohistiocytomas and fibromyxoid sarcomas. 2 Type I CM or Rudimentary meningocele (RM) is a rare developmental anomaly characterized by a mass in the posterior midline along the craniospinal axis. 7 Sibley et al in 1989 described 5 cases of RM and concluded that these lesions lacked the nodular & sheet-like growth pattern typical of central nervous system meningiomas and most primary ectopic meningiomas.…”

Section: Discussionmentioning

confidence: 99%

“…Cutaneous meningomas (CM) are a small subset of meningiomas accounting for less than 2% of cases. 2 They are further classified into three subtypes. Type I CM (rudimentary meningocele) are congenital lesions derived from ectopic arachnoid cells, type II are derived from arachnoid cells surrounding nerve bundles, and type III are direct extensions or metastases of dural-based neural neoplasms.…”

Section: Introductionmentioning

confidence: 99%

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Type I cutaneous meningioma of dorsal thoracic spine (Rudimentary Meningocele): A rare entity at an unusual site

Kripalani¹,

Jagdale

Pol³

et al. 2021

JDPO

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Cutaneous meningiomas (CM) are rare variants of meningiomas which are further classified into three subtypes. Type I CM (TICM) or Rudimentary meningocele (RM) is an uncommon developmental anomaly in which meningothelial elements are displaced into the skin and soft tissue. We present a case of 11 year boy with an upper back swelling since early childhood. His MRI spine showed a lesion at T4-T7 level with a fistulous tract connecting it to dural sac. Histopathology revealed clusters of oval to spindle cells arranged in whorls amidst collagen bundles and psammoma bodies. On immunohistochemistry these cells expressed EMA and Vimentin. A diagnosis of TICM was rendered based on these characteristic clinico-radiological & histopathological features. TICM pose a diagnostic challenge clinically and histopathologically and have an excellent prognosis. This is the 4 Indian case of RM and the 1 case of RM to be located in the spine in the Indian literature.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Type I cutaneous meningioma of dorsal thoracic spine (Rudimentary Meningocele): A rare entity at an unusual site

Kripalani¹,

Jagdale

Pol³

et al. 2021

JDPO

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A Solitary Lump on the Scalp

2020

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A woman in her early 70s was referred to the dermatology department for evaluation of a solitary, asymptomatic lump on her scalp. She was born with the lesion but noticed some growth following a minor local trauma a couple of months prior to seeking medical evaluation. The patient denied local inflammation, purulent discharge, and systemic symptoms. Her medical history was unremarkable apart from an allegedly benign breast nodule resection in her teenage years. In addition, her father died of metastatic cutaneous melanoma at 83 years old.Clinically, there was an ill-defined, infiltrated plaque with a normochromic, exophytic nodule on her scalp vertex measuring 4.2 × 3.8 cm (Figure , A). It had a waxy surface with irregular transverse furrows and overlying alopecia. Dermoscopic evaluation findings revealed a homogeneous yellow hue with no visible vascular or pigmented structures and absence of follicular ostia. The lesion was firm and mildly tender to the touch and seemed adherent to the underlying bone. There were no palpable lymph nodes. A brain magnetic resonance imaging was performed for further elucidation (Figure, B), as well as a punch biopsy (Figure, C and D).Lesion on the scalp A T1-weighted brain MRI B Cellular infiltration C Monomorphic cells D 20 µm 100 µm Clinical Review & Education

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Infant Rudimentary Meningocele with Tethering of the Cervical Cord: A Case Report

Shanahan,

Hudson,

Huq

et al. 2023

Asian J Neurosurg

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Rudimentary meningoceles of the spine with dural extension are very rare and warrant surgical excision to prevent infection and long-term neurological deficits in pediatric patients. We present the case of a 5-month-old infant with a tethered spinal cord secondary to a rudimentary meningocele. The patient presented shortly after birth with a midline cervical dimple that was evaluated for a suspected dermal sinus tract. Magnetic resonance imaging scan of the spine showed a sinus tract with intradural extension to C2-3 and external opening at the level of spinous process C5. En bloc surgical excision and spinal cord release were successfully performed. Histological analysis of the specimen confirmed the presence of two blunt sinus tracts and staining was consistent with a rudimentary meningocele. Intradural rudimentary meningoceles in infants can successfully be managed with surgical intervention. Surgery is indicated to prevent future motor complications from spinal cord tethering and neoplastic growth from the rudimentary meningocele.

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Type I Cutaneous Meningioma (Rudimentary Meningocele) With Intradural Attachment to the Phylum Terminale

Cited by 5 publications

References 13 publications

Type I cutaneous meningioma of dorsal thoracic spine (Rudimentary Meningocele): A rare entity at an unusual site

Type I cutaneous meningioma of dorsal thoracic spine (Rudimentary Meningocele): A rare entity at an unusual site

A Solitary Lump on the Scalp

Infant Rudimentary Meningocele with Tethering of the Cervical Cord: A Case Report

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