Characteristic imaging finding and spot radiological diagnosis in a young man with acute breathlessness and chest pain

Epithelioid hepatic angiomyolipoma (Epi-HAML) is a rare benign mesenchymal tumor with malignant potential. Most of Epi-HAML contains no or only a minimal amount of adipose tissue and poses a diagnostic challenge. Central vessels are characteristic imaging finding of Epi-HAML, which usually were displayed by dynamic contrast imaging. In this paper, we displayed the central vessels of Epi-HAML invisible on conventional MR images using a new developed abdominal susceptibility-weighted imaging (SWI). To the best of our knowledge, this is the first description for the role of SWI in characterization of Epi-HAML.

Download Full-text

Editorial Comment from Dr Sakakibara to Case of possible multiple system atrophy with a characteristic imaging finding of open bladder neck during storage phase as an initial sign

International Journal of Urology ◽

10.1111/iju.13440 ◽

2017 ◽

Vol 24 (11) ◽

pp. 819-820

Author(s):

Ryuji Sakakibara

Keyword(s):

Editorial Comment ◽

Multiple System Atrophy ◽

Bladder Neck ◽

Imaging Finding ◽

Characteristic Imaging ◽

Initial Sign

Download Full-text

Postoperative spinal subdural hygroma without incidental durotomy: illustrative cases

Journal of Neurosurgery: Case Lessons ◽

10.3171/case21291 ◽

2021 ◽

Vol 2 (23) ◽

Author(s):

Garrett Q. Barr ◽

Peter L. Mayer

Keyword(s):

Imaging Finding ◽

Vascular Malformations ◽

Anticoagulation Therapy ◽

Leg Pain ◽

Subdural Hygroma ◽

Additional Surgery ◽

Spinal Subdural Hematoma ◽

Characteristic Imaging ◽

Magnetic Resonance Imaging Mri ◽

Incidental Durotomy

BACKGROUND Spinal subdural hygroma (SSH) is a rare pathological entity occurring as a complication of spinal surgery. It is different from spinal subdural hematoma due to blunt trauma, anticoagulation therapy, spinal puncture, and rupture of vascular malformations. OBSERVATIONS The authors presented five patients with SSH who received decompression for lumbar stenosis. None had incidental durotomy. All presented postoperatively with unexpectedly severe symptoms, including back and leg pain and weakness. Postoperative magnetic resonance imaging (MRI) revealed SSH with a characteristic imaging finding termed the “flying bat” sign. Four patients underwent evacuation of SSH, with immediate and complete resolution of symptoms in three patients and improvement in one patient. One patient improved without additional surgery. At surgery, subdural collections were found to be xanthochromic fluid in three patients and plain cerebrospinal fluid (CSF) in one patient. LESSONS Unexpectedly severe back and leg pain and weakness after lumbar or thoracic spine surgery should raise suspicion of SSH. MRI and/or computed tomography myelography shows the characteristic findings termed the flying bat sign. Surgical evacuation is successful although spontaneous resolution can also occur. The authors hypothesized that SSH is due to CSF entering the subdural space from the subarachnoid space via a one-way valve effect.

Download Full-text

Imaging Manifestations of Mediastinal Fat Necrosis

Case Reports in Radiology ◽

10.1155/2013/323579 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Malay Y. Bhatt ◽

Santiago Martínez-Jiménez ◽

Melissa L. Rosado-de-Christenson ◽

Kenneth R. Watson ◽

Christopher M. Walker ◽

...

Keyword(s):

Chest Pain ◽

Soft Tissue ◽

Correct Diagnosis ◽

Fat Necrosis ◽

Surrounding Soft Tissue ◽

Pathologic Features ◽

Characteristic Imaging ◽

Unclear Etiology ◽

Soft Tissue Attenuation

Mediastinal fat necrosis (MFN) or epipericardial fat necrosis, as it is commonly referred to in the literature, is a rare self-limiting cause of chest pain of unclear etiology. MFN affects previously healthy individuals who present with acute pleuritic chest pain. Characteristic computed tomography (CT) findings include a fat attenuation lesion with intrinsic and surrounding increased attenuation stranding. There is often associated thickening of the adjacent pericardium and/or pleural effusions. We present two cases of MFN manifesting as ovoid fat attenuation lesions demarcated by a soft tissue attenuation rim with intrinsic and surrounding soft tissue attenuation stranding and review the clinical and pathologic features of these lesions. Knowledge of the clinical presentation of patients with MFN and familiarity with the characteristic imaging findings of these lesions should allow radiologists to prospectively establish the correct diagnosis and suggest conservative management and follow-up.

Download Full-text

Editorial Comment from Dr Sengoku to Case of possible multiple system atrophy with a characteristic imaging finding of open bladder neck during storage phase as an initial sign

International Journal of Urology ◽

10.1111/iju.13467 ◽

2017 ◽

Vol 24 (11) ◽

pp. 820-820

Author(s):

Atsushi Sengoku

Keyword(s):

Editorial Comment ◽

Multiple System Atrophy ◽

Bladder Neck ◽

Imaging Finding ◽

Characteristic Imaging ◽

Initial Sign

Download Full-text

Hepatic Epithelioid Hemangioendothelioma: Vascular Penetration in the Tumor as a Characteristic Imaging Finding

Journal of Liver ◽

10.4172/2167-0889.1000184 ◽

2015 ◽

Vol 04 (04) ◽

Author(s):

Rin Iraha ◽

Masahiro Okada ◽

Shimpei Kuniyoshi

Keyword(s):

Imaging Finding ◽

Epithelioid Hemangioendothelioma ◽

Characteristic Imaging

Download Full-text

Focal Parenchymal Atrophy of the Pancreas Is Frequently Observed on Pre-Diagnostic Computed Tomography in Patients with Pancreatic Cancer: A Case-Control Study

Diagnostics ◽

10.3390/diagnostics11091693 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1693

Author(s):

Shin Miura ◽

Tetsuya Takikawa ◽

Kazuhiro Kikuta ◽

Shin Hamada ◽

Kiyoshi Kume ◽

...

Keyword(s):

Computed Tomography ◽

Pancreatic Cancer ◽

Imaging Finding ◽

Pancreatic Head ◽

The Body ◽

Ductal Adenocarcinoma ◽

Pancreatic Cancers ◽

Characteristic Imaging ◽

Control Study ◽

Diagnostic Ct

Pancreatic ductal adenocarcinoma (PDAC) accounts for the majority of all pancreatic cancers and is highly lethal. Focal parenchymal atrophy (FPA) of the pancreas has been reported as a characteristic imaging finding of early PDAC. Here, we reviewed 76 patients with PDAC who underwent computed tomography (CT) between 6 months and 3 years before PDAC diagnosis, as well as 76 sex- and age-matched controls without PDAC on CT examinations separated by at least 5 years. FPA was observed corresponding to the location of the subsequent tumor on pre-diagnostic CT in 14/44 (31.8%) patients between 6 months and 1 year, 14/51 (27.5%) patients between 1 and 2 years, and 9/41 (22.0%) patients between 2 and 3 years before PDAC diagnosis. Overall, FPA was more frequently observed in patients with PDAC (26/76; 34.2%) on pre-diagnostic CT than that in controls (3/76; 3.9%) (p < 0.001). FPA was observed before the appearance of cut-off/dilatation of the main pancreatic duct, suggesting that FPA might be the earliest sign of PDAC. FPA was less frequently found in tumors in the pancreatic head (3/27; 11.1%) than in those in the body (14/30; 46.7%) or tail (9/19; 47.4%). FPA may predict the subsequent PDAC diagnosis, serving as an important imaging sign for the early diagnosis of pancreatic cancer.

Download Full-text