Cutaneous endometriosis is a rare manifestation of endometriosis, representing 0.5% to 1% of all endometriosis cases. It can be divided into primary and secondary, when appearing spontaneously or after a surgical procedure, when it is mostly found on surgical scar tissue. Some etiologies were proposed, but none of them could entirely explain the appearance of the tumor. Differential diagnosis includes melanoma, metastatic nodule, keloid and pyogenic granuloma. Dermoscopic features are not yet well established, but there are some characteristics that suggest the diagnosis. Treatment is surgical in larger sized lesions. Malignization can occur. The screening for endometriosis is mandatory by means of gynecologic, imaging and marked-tumor evaluation. We report a case of primary umbilical endometriosis and discuss its dermoscopic aspects.

Acanthosis nigricans is a common dermatosis and is most often associated with benign conditions, such as insulin resistance. It is rare as a paraneoplastic marker. As such, it is characterized by sudden onset and rapid dissemination of velvety and hyperchromic skin lesions. The term "tripe palm" refers to exaggeration of the palmar ridge pattern, which resembles the internal surface of the bovine intestinal tract. This is a paraneoplastic marker of high specificity, with 90% of the cases being associated with malignancy. We report the case of a patient with stage IV ovarian adenocarcinoma presenting acanthosis nigricans and tripe palm. Both findings are closely correlated to the neoplasm course. Keywords: Acanthosis nigricans; Neoplasm metastasis; Skin manifestations Resumo: A acantose nigricante é uma dermatose comum, mais frequentemente associada a condições benignas, como resistência periférica à insulina. É rara como marcador paraneoplásico. Como tal, é caracterizada pelo aparecimento repentino e disseminação rápida de lesões cutânas aveludadas e hipercrômicas. O termo "palma em tripa" se refere ao aumento da demarcação do sulcos cutâneos, que se assemelha à face interna do trato intestinal bovino. É um marcador paraneoplásico de alta especificidade, com 90% dos casos associados à malignidade. Relatamos uma paciente com adenocarcinoma de ovário, estágio IV, apresentando acantose nigricante e "palma em tripa"; ambos achados estão estreitamente relacionados ao curso da neoplasia. COMMUNICATIONAcanthosis nigricans is a common dermatosis and is most often associated with benign conditions, such as obesity and insulin resistance. 1 It is rare as a paraneoplastic marker. However, when related to malignancy, 90-95% of cases are associated with abdominal cavity adenocarcinomas and, in more than half of them, with gastric tumors. 2,3,4 The term "tripe palm" refers to exaggeration of palmar and sometimes plantar skin ridges, which resemble the internal surface of the bovine gastrointestinal tract. It is a paraneoplastic marker, with 90% of the cases being associated with malignancy. In this communication article, we describe acanthosis nigricans as a paraneoplastic marker and highlight the "tripe palm" finding, which is fairly unreported and reveals great specificity for malignancy. 3A 57-year-old woman presented skin thickening with exaggerated ridges and hyperpigmentation of the orbicular, perilabial, and cervical regions. The conditions had been present for two years and were associ-

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Lucio's phenomenon represents a serious cutaneous necrotizing reaction, which can occur with Lucio's leprosy and also in other forms of lepromatous leprosy. The authors discuss the case of a 63-year-old male patient presenting with ulcers and necrotic cutaneous lesions on the limbs, torso and face, associated with recurring sinusitis, hoarseness and a weight loss of 25 kilos over the last year. Bacilloscopy of intradermal scrapings showed a bacilloscopic index of 5 and the histopathological findings were compatible with the diagnosis of Lucio's phenomenon. The chosen treatment was exclusively multibacillary multidrug therapy, resulting in important dermatological improvement after one month of therapy. The authors present an impressive case of Lucio's phenomenon with an exceptional response to treatment exclusively with multibacillary multidrug therapy.

A poroceratose superficial disseminada faz parte de um grupo de doenças em que há distúrbio de ceratinização epidérmica, caracterizada por numerosas lesões cujos limites são dados por um muro ceratósico. A descrição de novos padrões dermatoscópicos tem sido cada vez mais relatada e sua contribuição nesta dermatose é uma realidade. Os autores descrevem um caso típico da doença, apresentam seus achados dermatoscópicos, comparando com o que há descrito na literatura e incluem a presença de poros dilatados no interior das lesões como mais um achado na caracterização da doença.