[Diagnosis and treatment of cardiac transthyretin amyloidosis. Innovative therapy with tafamidis.]

Cardiac amyloidosis is a rare and severe disease with worse prognosis than classic cardiac insufficiency. Transthyretin amyloïdosis is an underdiagnosed cause of amyloidosis. Technetium scintigraphy allows to confirm diagnosis of transthyretin amyloidosis with great specificity. A new hope is brought by tafamidis, a novel therapeutic option for this specific condition. This medication is the first one that proved a risk reduction in mortality among patients with cardiac amyloidosis in class NYHA I and II. In this article, we review across a clinical case the modalities for the diagnosis and treatment of transthyretin amyloidosis.

[Acute pancreatitis induced by metastases from small cell pulmonary cancer]

Although metastatic lesions associated with small cell lung cancer (SCLC) are rare in the pancreas, metastatic-induced acute pancreatitis from the same cancer is even more so. We discuss the clinical case of a 67-year-old patient with SCLC, diagnosed for 21 months and stable for 3 months, presenting in the emergency department with transfixing epigastric pain. The radiological study reveals two large masses in the pancreas as well as multiple peripancreatic adenopathies. They are confirmed as metastases of the SCLC. Among several treatment proposals, the initiation of palliative analgesia by both radiotherapy and drug therapy is preferred, due to the very advanced state of SCLC and the major toxicity of other systemic treatments.

A case of a borderline adrenal oncocytoma in a 62-year old female

INTRODUCTION

Adrenal oncocytomas are a rare pathology and only about 160 cases have been reported in the literature.

CASE DESCRIPTION

We describe the case of a 62-year old female with an incidentaloma found in the right adrenal gland on a CT scan. Endocrine testing showed a non-secreting lesion. An MRI was performed to get a more precise diagnosis. It excluded a simple adenoma and a malignant tumor had to be suspected. Open adrenalectomy was performed, and pathology results confirmed a borderline adrenal oncocytoma.

DISCUSSION

Oncocytomas are usually found in the kidneys, salivary glands, parathyroid, lung, pituitary gland, and ovaries. It is important to differentiate them from, for example, pheochromocytomas, adrenal cortical carcinoma, and metastasis. Most oncocytomas are non-functioning (17% are functional). Usually, they are found as incidentalomas on a CT or MRI scan. The only way to confirm the diagnosis at present is pathological examination. Bisceglia and his colleagues have proposed a new system to classify adrenal oncocytomas. The presence of one major criterion indicates malignancy, the presence of one to four minor criteria is indicative of uncertain potential. The absence of all major and minor criteria indicates benign behavior. Treatment options are open surgery, laparoscopic surgery and rarely robotic surgery.

CONCLUSION

An adrenal oncocytoma remains a rare diagnosis and has a wide array of differential diagnosis. It should be treated by surgical removal and a close follow up is suggested. More research should be done regarding diagnosis, treatment and follow-up.

Skin lesions in European hibernating bats associated with Geomyces destructans, the etiologic agent of white-nose syndrome

White-nose syndrome (WNS) has claimed the lives of millions of hibernating insectivorous bats in North America. Its etiologic agent, the psychrophilic fungus Geomyces destructans, causes skin lesions that are the hallmark of the disease. The fungal infection is characterized by a white powdery growth on muzzle, ears and wing membranes. While WNS may threaten some species of North American bats with regional extinction, infection in hibernating bats in Europe seems not to be associated with significant mortality. We performed histopathological investigations on biopsy samples of 11 hibernating European bats, originating from 4 different countries, colonized by G. destructans. One additional bat was euthanized to allow thorough examination of multiple strips of its wing membranes. Molecular analyses of touch imprints, swabs and skin samples confirmed that fungal structures were G. destructans. Additionally, archived field notes on hibernacula monitoring data in the Harz Mountains, Germany, over an 11-year period (2000-2011) revealed multiple capture-recapture events of 8 banded bats repeatedly displaying characteristic fungal colonization. Skin lesions of G. destructans-affected hibernating European bats are intriguingly similar to the epidermal lesions described in North American bats. Nevertheless, deep invasion of fungal hyphae into the dermal connective tissue with resulting ulceration like in North American bats was not observed in the biopsy samples of European bats; all lesions found were restricted to the layers of the epidermis and its adnexae. Two bats had mild epidermal cupping erosions as described for North American bats. The possible mechanisms for any difference in outcomes of G. destructans infection in European and North American bats still need to be elucidated.

[Hemobilia disclosing very small hepatocellular carcinoma ruptured into the biliary ducts]

In hepatocellular carcinoma, invasion of the biliary tree usually occurs in large tumors. We report a case of a minute hepatocellular carcinoma which invaded the biliary tree and was revealed by secondary hemobilia, in a 65-old alcoholic patient with cirrhosis. The tumour was not identified by preoperative morphological examinations. Surgical exploration was performed due to unexplained hemobilia. Tumoral debris were observed in the right intrahepatic biliary tract during operative choledoscopy, justifying a right hepatectomy. A 5 mm diameter tumour was found in liver specimen. No recurrence had occurred after 22 months. In conclusion, in cirrhotic patients, unexplained hemobilia can reveal a small, potentially curable, hepatocellular carcinoma which has spread to the biliary tree.