Pancreatic collision tumor : mucinous cystadenoma and clear cell renal cell carcinoma metastasis

We present a clinical, radiological, surgical, and pathological correlation case of a 49-year-old woman with a prior nephrectomy due to a clear cell renal cell carcinoma, who was then diagnosed with a multilocular cystic lesion in the pancreatic tail after a routine ultrasound. Computed tomography and magnetic resonance cholangiopancreatography showed a multilocular cystic lesion with a hypervascular wall nodule in the pancreas. The patient underwent a distal pancreatectomy and had a final diagnosis of pancreatic mucinous cystadenoma with an associated component of clear cell renal cell carcinoma (collision tumor of the pancreas)

The molar tooth sign and the bat wing appearance in Joubert syndrome

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The molar tooth sign and the bat wing appearance in Joubert syndrome

A 10-year-old female patient was brought to the outpatient clinic with a history of neurodevelopmental delay, gait and limb incoordination, and oculomotor apraxia. According to her parents, the girl had always showed delayed acquisition of motor milestones when compared to other children, which became more evident when she was 8 months old and was not able to sit. She was able to sit by age of 2, and walked independently, but unsteady, when she was 3.5 years old. She presented with cognitive impairment. Reviewing her history, it became clear that she was hypotonic at birth and subsequently developed gait ataxia in early childhood. She was born to nonconsanguineous parents and there were no other similar cases in her family. On physical examination, she held her head preferentially in a lateralized position to her right side. She showed gait ataxia in tandem walking, abnormal stance with a positive Romberg’s sign, dysmetria, dysdiadochokinesia, diffuse hyperreflexia, bilateral Babinski sign, and oculomotor apraxia. The Wechsler Intelligence Scale for Children-III (WISC-III) demonstrated an IQ of 67 (intellectual disability). There were no other abnormalities on physical examination. Electroencephalogram showed focal paroxysmal discharges of moderate intensity in the posterior parietal-temporal region. Brain magnetic resonance imaging (MRI) demonstrated agenesis of the cerebellar vermis with a slit in the medial line sparing the two cerebellar hemispheres (Figure 1), lengthening and thickening of the cerebellar peduncles, associated with reduction of the anteroposterior diameter of the mesencephalon, the so-called “molar tooth sign” (MTS) (Figure 2). Morphological alterations in the posterior fossa showed a 4th ventricle with a typical “bat wing” appearance (Figure 3). These findings were highly suggestive of Joubert syndrome (JS)

The Role of MRI in the Diagnosis of Post-sternotomy Injuries of the Brachial Plexus

Brachial Plexus Injury (BPI) is an uncommon complication of median sternotomy capable of causing a permanent or transitory sensitivity and/or motor function impairment in the upper limbs. During a cardiac surgery through sternotomy, for the assessment of the thoracic cage configuration and the site of mediastinal structures, a broader surgical field may be required. If the sternal retractors are overstretched, the costovertebral junctions are likely to be dislocated damaging the adjacent soft tissues at the same time. Magnetic Resonance Imaging (MRI) is the modality of choice for estimating the degree of physical damage to the brachial plexus. In this paper, we intended to report the MRI findings of a chronic case of BPI following a cardiac surger

Pancreatic collision tumour: mucinous cystadenoma and renal clear cell carcinoma metastasis.

We present a clinical, radiological, surgical and anatomopathological correlation case of a 49-year-old female with a prior nephrectomy due to a clear cell renal cell carcinoma (RCC), who discovered a multilocular cystic lesion in the pancreatic tail after a routine ultrasound. Computed tomography and magnetic resonance cholangiopancreatography were performed, showing a multilocular cystic lesion with a hypervascular wall nodule in the pancreas. The patient underwent distal pancreatectomy, with a final diagnosis of pancreatic mucinous cystadenoma with an associated component of clear cell renal cell carcinoma (collision tumor of the pancreas)

Pancreatic collision tumour: mucinous cystadenoma and renal clear cell carcinoma metastasis.

We present a clinical, radiological, surgical and anatomopathological correlation case of a 49-year-old female with a prior nephrectomy due to a clear cell renal cell carcinoma (RCC), who discovered a multilocular cystic lesion in the pancreatic tail after a routine ultrasound. Computed tomography and magnetic resonance cholangiopancreatography were performed, showing a multilocular cystic lesion with a hypervascular wall nodule in the pancreas. The patient underwent distal pancreatectomy, with a final diagnosis of pancreatic mucinous cystadenoma with an associated component of clear cell renal cell carcinoma (collision tumor of the pancreas)

PET/CT imaging in lung cancer: indications and findings

The use of PET/CT imaging in the work-up and management of patients with lung cancer has greatly increased in recent decades. The ability to combine functional and anatomical information has equipped PET/CT to look into various aspects of lung cancer, allowing more precise disease staging and providing useful data during the characterization of indeterminate pulmonary nodules. In addition, the accuracy of PET/CT has been shown to be greater than is that of conventional modalities in some scenarios, making PET/CT a valuable noninvasive method for the investigation of lung cancer. However, the interpretation of PET/CT findings presents numerous pitfalls and potential confounders. Therefore, it is imperative for pulmonologists and radiologists to familiarize themselves with the most relevant indications for and limitations of PET/CT, seeking to protect their patients from unnecessary radiation exposure and inappropriate treatment. This review article aimed to summarize the basic principles, indications, cancer staging considerations, and future applications related to the use of PET/CT in lung cancer

The molar tooth sign and the bat wing appearance in Joubert syndrome

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