Mary Ellen McMahon

Dr. Mary Ellen McMahon

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 August 2022 in British Journal Of Neurosurgery
Verified
Journal Article
Closed access
MMMary Ellen McMahon
Mary Ellen McMahon
DMD. Murray
D. Murray
SMS. MacNally
S. MacNally
DOD. F. O’bRien
D. F. O’bRien
Lhermitte-Duclos Disease is a rare clinical entity involving a dysplastic lesion of the cerebellum. The dysplastic cerebellar ganglioblastoma is often seen in association with Cowden Syndrome, an autosomal dominant disorder consisting of a mutation in the phosphatase and homologous tensin (PTEN) gene. Characteristic findings on neuroimaging allow for a pre-operative diagnosis to be made, which guides further management of the condition. This report describes the diagnosis and management of Lhermitte-Duclos Disease in a 51-year-old lady, spanning a period of almost seven years. The characteristic radiological and histological findings are presented, along with the clinical features associated with Cowden Syndrome. This patient ultimately underwent surgical intervention for symptomatic relief, which is described here.

20 April 2023 in Journal of Plastic, Reconstructive & Aesthetic Surgery
Verified
Journal Article
Closed access
MMMary Ellen McMahon
Mary Ellen McMahon
KGK. Gressmann
K. Gressmann
JMJ.D. Martin-Smith
J.D. Martin-Smith

1 January 2025 in Plastic and Reconstructive Surgery - Global Open
Verified
Journal Article
Open access
MMMary Ellen McMahon
Mary Ellen McMahon
RBRobert Mrcs Browne
Robert Mrcs Browne
SISafwat Frcs Ibrahim
Safwat Frcs Ibrahim
Background: The use of PolyNovo NovoSorb biodegradable temporizing matrix (BTM) has become popular for the management of complex wounds, often with the subsequent application of a split-thickness skin graft. To date, there are no published case series describing healing via secondary intention over BTM in the management of small, complex nasal wounds following excision of skin malignancy in the elective setting. Methods: This study consisted of a single-center, consecutive case series. Inclusion criteria consisted of defects with exposed cartilage or bone in wounds located on the nasal dorsum or nasal sidewall resulting from the elective excision of nasal skin malignancies. BTM without skin grafting was used as a single-stage reconstruction in all patients following oncological clearance. After delamination, the wound was left to heal by secondary intention. The Patient and Observer Scar Assessment Scale was used to measure the aesthetic outcome. Results: All 32 cases exhibited 100% integration of BTM and successful wound closure. Two cases required further excision following review of the final histology. The median (SD) overall Patient and Observer Scar Assessment Scale score was 2.7 (±0.81), and the median overall observer score was 3.2 (±0.73). Conclusions: When planning nasal reconstruction following oncological resection, one should consider the patient’s comorbidities; their ability to tolerate the anesthetic, surgery, donor skin deficit, and risks; and the technical ability of the operating surgeon. We suggest that the use of BTM without harvesting a skin graft represents a simple, low-risk option for reconstruction of nasal defects that produces acceptable functional and aesthetic outcomes.

21 October 2023 in The Surgeon
Verified
Journal Article
Closed access
MMMary Ellen McMahon
Mary Ellen McMahon
LOLukas O'BRien
Lukas O'BRien
THThomas Heary
Thomas Heary
SPShirley Potter
Shirley Potter
BOBarry O'SUllivan
Barry O'SUllivan

5 December 2023 in The Journal of Hand Surgery (Asian-Pacific Volume)
Verified
Journal Article
Closed access
MMMary Ellen McMahon
Mary Ellen McMahon
SISafwat Ibrahim
Safwat Ibrahim

30 January 2026 in JPRAS Open
Verified
Journal Article
Open access
LOLukas P. O’BRien
Lukas P. O’BRien
KRKasie O’ Reilly
Kasie O’ Reilly
MMMary Ellen McMahon
Mary Ellen McMahon
ATAntonina Tcacenco
Antonina Tcacenco
RCRonan Cahill
Ronan Cahill
SPShirley M. Potter
Shirley M. Potter
Intraoperative loss of surgical needles represents a rare but significant challenge in operative settings, particularly in microsurgical procedures involving free tissue transfer where fine sutures (8–0 to 10–0) are employed. Current hospital protocols typically use intraoperative portable radiography to localize misplaced needles. However, the diagnostic utility of X-ray imaging in detecting small-caliber needles remains poorly defined.