111In-pentetreotide uptake in an ovarian teratoma and impact of SPECT/CT imaging.

We present a 19-year-old woman with a neuroendocrine tumor of the appendix diagnosed during an acute appendicitis. An 111In-pentetreotide scan was performed to establish the extension of the disease. Scintigraphy showed an abnormal focal uptake in the right side of the pelvis.

Complete bilateral ophthalmoplegia resistant to caloric stimulation in bilateral paramedian midbrain-thalamic infarction.

A 79-year-old woman who developed bilateral paramedian midbrain-thalamic infarction manifested complete bilateral ophthalmoplegia resistant to caloric stimulation, indicating impairment of the vestibulo-ocular reflex (VOR). Previous reports have mentioned this phenomenon but have not explicitly reported the results of caloric testing. Why a lesion apparently confined to the upper brainstem should produce impairment of the horizontal VOR remains unexplained.

Diagnosis of a primary testicular lymphoma by echography and magnetic resonance imaging.

We here describe a primary large B cell non-Hodgkin lymphoma of the right testicle in a 73-year-old male diagnosed with echography and magnetic resonance imaging. Treatment was based upon orchiectomy and chemotherapy, without any recurrence 2 years later. Ultrasonography and magnetic resonance findings with normal serum tumoural markers (AFP and B-HCG) can differentiate these tumors from germinal testicular tumors.

Pontine metastases as a cause of dysphagia in lung carcinoma.

Dysphagia is an unusual symptom in the clinical course of lung carcinoma. When it appears, it is necessary to differentiate between regional dissemination, drug toxicity, opportunistic infection and, most rarely, metastatic dissemination to the brain stem. Magnetic resonance imaging (MRI) is the best diagnostic option to exclude this last possibility.

[Non-secreting, extra-adrenal retroperitoneal paragangliomas].

Objective: Two cases of extra-adrenal non-secretory retroperitoneal paraganglioma in male patients are presented. The first case had intermittent vascular claudication in lower limbs and the second one was an incidental finding during staging of a lymphoma.

Methods: Both cases were studied using imaging techniques (US, CT and MRI) and histological and immunohistochemical analyses.