Primary Malignant Peritoneal Mesothelioma Associated with Renal Cell Carcinoma. A Concise Review Based on a Clinical Case Baseada num Caso Clínico

O Mesotelioma peritoneal maligno é um tumor maligno relacionado frequentemente com exposição prolongada a fibras de amianto, de mau prognóstico, de diagnóstico geralmente tardio, face à pouca expressão clínica na fase inicial da doença. Como o mesotelioma evolui geralmente só na cavidade peritoneal, doentes seleccionados poderão ter maior sobrevivência se for possível a peritonectomia extensa e quimioterapia hipertérmica intraperitoneal intraoperatória. Os autores referem a sincronicidade ainda não descrita, de mesotelioma peritoneal maligno primário e carcinoma de Grawitz. São revistos concisamente: a clínica destes tumores, síndromes paraneoplásicos (disfunção bioquímica hepática, emagrecimento extremo); etiopatogenia da acção cancerígena das fibras de amianto; mecanismos de disseminação intraperitoneal; avaliação tomodensitométrica; importância da imunohistoquímica no diagnóstico histopatológico; estadiamento; importância do tratamento multidisciplinar destes tumores.

Argyria. Case Report

A 70-year-old male rural worker was referred to our clinic with widespread grey pigmentation of the skin and nails. The condition had been asymptomatic for its entire duration (5 years). He reported past intranasal application of 10% Silver Vitellinate. A skin biopsy was performed and histology corroborated the clinical diagnosis of Argyria. This case represents a currently rare dermatological curiosity. Although silver colloids and salts have been withdrawn and/or banned by some drug surveillance agencies, they continue to be freely sold and unregulated as food supplements and as ingredients in alternative medicines, thereby risking the emergence of new cases of silver poisoning.

Case for Diagnosis

A 27 year-old-man, with no known personal or familial history of disease, mentioned a 10-year history of asymptomatic groups of telangiectasias, with a Blaschko lines distribution on the right lateral aspect of the neck and asymptomatic. He denied any episodes of disease or drug intake that could be associated with the disease. Blood work had no changes, namely of liver enzymes or infectious serologies. The clinical diagnosis of Idiopathic Acquired Unilateral Nevoid Telangiectasia was made, an uncommon, benign vascular malformation. The patient declined doing a cutaneous biopsy or treatment with a cosmetic intent.