Background: Neurofibromas are benign nerve sheath tumors that usually affect peripheral nerves and are related to neurofibromatosis type 1; however, they have not been described as a cause of intraparenchymal brain tumor.
Case Description: We report a case of intracranial myxoid neurofibroma in a 19-year-old female patient manifested as an intense and progressive cephalea, followed by nausea, vomiting, photophobia, and phonophobia. Computed tomography and magnetic resonance imaging showed an extant, expansive left frontoparietal parafalcine/parasagittal tumor. Histopathologic examination determined S-100 protein and CD34 positivity, as well as sparse expression of Ki67 protein, and indicated Schwann cells with characteristic wavy nuclei and intraneural fibroblasts in a myxoid background. Together, these observations characterized the tumor as myxoid neurofibroma. The tumor was excised, and the patient recovered without deficits and with no signs of recurrence after 6 years of follow-up.
Conclusions: This is a novel presentation of a myxoid neurofibroma. The tumorigenesis mechanisms are likely complex and possibly involve the differentiation of Schwann cells present in adrenergic autonomic nerves in the subarachnoid arterial branches or in trigeminal nerves present in the meningeal convexity.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.wneu.2017.01.013 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dermal CIC-Rearranged Sarcoma With Neuroendocrine Differentiation Mimicking Merkel Cell Carcinoma.
J Cutan Pathol
December 2024
SkinPath Solutions, Smyrna, Georgia, USA.
Capicua transcriptional repressor (CIC)-rearranged sarcoma (CRS) is a rare and recently described tumor that most commonly affects patients between 15 and 30 years of age. It is an undifferentiated round cell malignancy, with a disease defining CIC fusion, with double homeobox 4 (DUX4) being the most common partner. Here, we report a 77-year-old woman who presented with a cutaneous thigh mass with a clinical morphology suggesting Merkel cell carcinoma.
View Article and Find Full Text PDFDiagnostic Utility of Squash Smear Cytology in Chordoma: A Tertiary Care Center Experience.
J Cytol
November 2024
Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Background And Aims: Chordomas are rare notochordal tumors. They are suitable candidates for squash smear cytology (SSC) owing to their gelatinous consistency and destructive nature. SSC is an important tool for making a quick intra-operative preliminary diagnosis and taking real-time surgical and further management decisions.
View Article and Find Full Text PDFAtypical Presentation of Spindle Cell Lipoma in a Young Male with a History of Malignant Melanoma.
Dermatopathology (Basel)
November 2024
Department of Dermatology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
Spindle cell lipoma (SCL) is a benign adipocytic tumor usually found in the subcutis of the posterior neck, upper back, and shoulder, predominantly in middle-aged males. This case report describes an atypical presentation of SCL in a 26-year-old male with a history of malignant melanoma. The patient presented with an erythematous plaque with central hyperpigmentation on the right upper arm, an uncommon location and presentation for SCL.
View Article and Find Full Text PDFAnaplastic lymphoma kinase1 positive inflammatory myofibroblastic tumor of the urinary bladder: A rare mesenchymal neoplasm with diagnostic and therapeutic implications.
SAGE Open Med Case Rep
December 2024
Department of Pathology, University of California San Francisco, UCSF, San Francisco, CA, USA.
Inflammatory myofibroblastic tumors (IMTs) are rare mesenchymal neoplasms characterized by spindle-cell morphology with accompanying inflammatory infiltrates. Originally described in 1939, these tumors can arise in various anatomic locations, with the urinary bladder being a rare site of occurrence but the most common within the genitourinary tract. IMTs typically present as polypoid masses or firm submucosal nodules, often with painless hematuria in bladder cases.
View Article and Find Full Text PDFHeterogeneity in response to neoadjuvant radiotherapy between soft tissue sarcoma histotypes: associations between radiology and pathology findings.
Eur Radiol
December 2024
Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Objective: To investigate imaging biomarkers of tumour response by describing changes in imaging and pathology findings after neoadjuvant radiotherapy (nRT) and exploring their correlations.
Materials And Methods: Tumour diameter, volume, and tumour-to-muscle signal intensity (SI) ratio were collected before and after radiotherapy in a cohort of 107 patients with intermediate/high-grade STS and were correlated with post-radiotherapy pathology findings (percentage of necrosis, viable cells, and fibrosis) using Spearman Rank test. Pathological complete response (pCR) was defined as no residual viable cells present, whereas the presence of < 10% viable cells was defined as near-complete pathologic response (near-pCR).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!