Liver schwannoma: findings on MRI

Momtahen, Amir Javad; Akduman, Ece Isin; Balci, N. Cem; Fattahi, Rana; Havlioglu, Necat

doi:10.1016/j.mri.2008.04.001

Cited by 18 publications

(14 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preoperative diagnostic imaging was nonspecific. Ultrasound imaging revealed a solid isoechoic or hypoechoic well-bordered mass, computed tomography a heterogeneous mass with peripheral enhancement, MRI a mass with low signal intensity in T1 and high signal intensity in T2-weighted imaging [ 7 , 8 ]. Fine needle aspiration performed preoperatively in 2 patients revealed suspected spindle cell neoplasia or stromal tumor [ 2 ].…”

Section: Discussionmentioning

confidence: 99%

Schwannoma in the porta hepatis - laparoscopic excision under laparoscopic ultrasound guidance.

Sebastian

Sroczyński

Donizy

et al. 2017

Videosurgery and Other Miniinvasive Techniques

View full text Add to dashboard Cite

Schwannomas are usually benign tumors attached to peripheral nerves and are rarely found in the gastrointestinal tract. Schwannomas in the porta hepatis are extremely rare, with only 15 cases described in the literature to date. A 22-year-old female patient presented with colicky upper abdominal pain lasting 3 months. Magnetic resonance imaging of the abdominal cavity revealed a tumor in the porta hepatis. The patient was qualified for laparoscopy. The tumor was totally excised laparoscopically under guidance of laparoscopic ultrasound without intra- or postoperative complications. Postoperative histopathological examination confirmed the porta hepatic schwannoma. The patient recovered uneventfully with very good cosmetic results. In the follow-up period of 5 months we have not observed any abdominal or general health problems. The present case is the first report in the world of laparoscopic ultrasound guided laparoscopic excision of a porta hepatic schwannoma.

show abstract

Section: Discussionmentioning

confidence: 99%

Schwannoma in the porta hepatis - laparoscopic excision under laparoscopic ultrasound guidance.

Sebastian

Sroczyński

Donizy

et al. 2017

Videosurgery and Other Miniinvasive Techniques

View full text Add to dashboard Cite

show abstract

“…Generally, a CT scan shows a well-defined hypodense heterogenous mass with peripheral enhancement [ 8 ]. Schwannomas on the MRI are usually masses with hypointensity on T1-weighted images and heterogenous hyperintensity or, sometimes internal heterogeneous mixed hypo and hyperintensity on T2-weighted images [ 9 ]. Author Cohen has presented histologic evidence suggesting that the hypo-density areas and inhomogeneities in schwannomas are due to hypocellular areas adjacent to more cellular regions and/or hypocellular areas adjacent to dense bundles of collagen, xanthomatous formation, and cystic degeneration within the tumors [ 10 ].…”

Section: Case Presentationmentioning

confidence: 99%

Porta hepatic schwannoma: case report and a 30-year review of the literature yielding 15 cases

et al. 2016

View full text Add to dashboard Cite

BackgroundSchwannomas located in the periportal region are extremely rare. Only 14 cases have been reported in the medical literature worldwide. Cases of porta hepatic schwannomas reported in the literature worldwide were reviewed. As a result, it is very challenging for surgeons to make a preoperative diagnosis due to its rarity and nonspecific imaging manifestations.Case PresentationA 57-year-old Chinese female was admitted to our institution with complaint of upper abdominal distension and the abdominal CT in the local hospital revealed a hypodense mass in the porta hepatis. A fine needle aspiration (FNA) was made to confirm the diagnosis, but the result was just suggestive of spindle cell neoplasia. Eventually, the patient underwent surgery and postoperative pathology confirmed schwannoma in porta hepatis. The patient recovered uneventfully with no evidence of recurrence after a follow-up period of 41 months.ConclusionsIt is essential for the final diagnosis of porta hepatic schwannomas to combine histological examination with immunohistochemistry after surgery. The main treatment of porta hepatic schwannomas is complete excision with free margins and no lymph node dissection. In some cases, biliary reconstruction or the proper hepatic and the gastroduodenal artery resection was performed because the tumor was inseparably attached to the extrahepatic bile duct or the proper hepatic and the gastroduodenal artery. Malignant transformation of schwannomas is very rare and the overall prognosis is satisfactory.

show abstract

“…The signal intensity on T 1 and T 2 weighted images varies depending on the proportion of Antoni A and Antoni B regions with the presence of secondary degeneration. Schwannoma usually shows non-homogeneous high signal intensity on T 2 weighted images, low to intermediate signal intensity on T 1 weighted images and variable enhancement on post-contrast images owing to the mixture of Antoni A and B (Figure 6) [18]. potential for recurrence, persistent local growth and spontaneous regression [19].…”

Section: Schwannomamentioning

confidence: 99%

MRI findings of uncommon non-hepatocyte origin primary liver tumours with pathological correlation

Yc¹,

Park²,

Chung³

et al. 2010

BJR

View full text Add to dashboard Cite

ABSTRACT. The objective of this article was to illustrate the MRI findings of uncommon non-hepatocyte origin primary liver tumours, correlate them with the pathological features and discuss differential diagnoses. In conclusion, the MRI findings of uncommon benign and malignant non-hepatocyte-origin primary liver tumours vary. Awareness of characteristic MRI features can aid differential diagnosis and prevent unnecessary surgery.

show abstract

Liver schwannoma: findings on MRI

Cited by 18 publications

References 11 publications

Schwannoma in the porta hepatis - laparoscopic excision under laparoscopic ultrasound guidance.

Schwannoma in the porta hepatis - laparoscopic excision under laparoscopic ultrasound guidance.

Porta hepatic schwannoma: case report and a 30-year review of the literature yielding 15 cases

MRI findings of uncommon non-hepatocyte origin primary liver tumours with pathological correlation

Contact Info

Product

Resources

About