A Large Mass over the Foot due to the Coexistence of an Eccrine Poroma and a Poroid Hidradenoma: A Case Report / Poroma écrino associado a um hidradenoma poroide devido a coexistência de uma grande massa sobre o pé: Relato de caso

Abstract Eccrine poroma and poroid hidradenoma are uncommon benign poroid neoplasms derived from eccrine sweat glands. There are four types of poroid neoplasms according to the position within the skin layer: hidroacanthoma simplex, eccrine poroma, dermal duct tumor, and poroid hidradenoma. Poroid neoplasms usually arise as slow-growing solitary lesions and can present different clinical presentations, such as a foot mass, an ulceration lesion, a solid cyst, a bleeding lesion or suspected melanoma. Extremities are the most common sites, especially hands and feet. However, the coexistence of these two tumors in a single lesion is extremely rare. Surgical excision represents the main treatment and can be curative, preventing malignant changes and recurrence. We describe a rare solitary tumor over the foot with clinical and histopathological features of an association of an eccrine poroma and a poroid hidradenoma that was surgically treated with no recurrence at the midterm follow-up. Level of EvidenceIV, Case Report.

Resumo O poroma écrino e o hidradenoma poroide são neoplasias poroides benignas raras, derivadas das glândulas sudoríparas écrinas. Existem quatro tipos de neoplasias poroides, conforme a posição na camada da pele, sendo denominadas hidroacantoma simples, poroma écrino, tumor do ducto dérmico e hidradenoma poroide. As neoplasias poroides geralmente surgem como uma lesão solitária, com crescimento lento, podendo apresentar diferentes apresentações clínicas, como massa sobre o pé, lesão ulcerada, cisto sólido, lesão hemorrágica ou suspeita de melanoma. As extremidades são os sítios mais comuns, especialmente as mãos e os pés. No entanto, a coexistência desses dois tumores em uma única lesão é extremamente rara. A excisão cirúrgica representa o principal tratamento, podendo ser curativa, prevenindo assim as alterações malignas e as recidivas. Descrevemos um raro tumor solitário no pé com características clínicas e histopatológicas de uma associação de poroma écrino e hidradenoma poroide tratado cirurgicamente sem recidiva no acompanhamento de médio prazo. Nível de EvidênciaIV, Relato de Caso.

Espiradenoma écrino em rato twister (Rattus norvegicus): Relato de caso / Spiradenoma ecrine in twister rat (Rattus norvegicus): Case report / Espiradenoma ecrino en rata twister (Rattus norvegicus): Reporte de caso

A ordem Rodentiarepresenta 40% de todos os mamíferos vivos do planeta e está adaptada a todos os ambientes. O rato twister (Rattus novegicus) pertence à família Muridae. Historicamente, os roedores estão próximos de seres humanos há séculos e onde há presença de seres humanos, possivelmente há roedores. A população de roedores e lagomorfos estácrescendo nas residências de tutores, na condição de animais petsnão convencionais O objetivo do presente trabalho científico é descrever a ocorrência de uma neoplasia benigna em glândula sudorípara em rato, assim como, discorrer sobre a técnica cirúrgica e o protocolo anestésico utilizado com sucesso no paciente.(AU)

The Rodentia order represents 40% of all living mammals on the planet and are adapted to all environments. The twister rat (Rattus novegicus) belongs to the Muridae Family. Historically rodents have been close to humans for centuries and where humans are present, there are possibly rodents. Nowdays rodents and lagomorphs are commons in the owners homes, as animals pets because of their graciousness and docility. The objective of the present scientific work is to describe the occurrence of a benign neoplasm reported in rat, as well as to discuss the surgical technique and anesthetic protocol used successfullyin the patient.(AU)

El orden Rodentia representa el 40% de todos los mamíferos vivos del planeta y se adaptan a todoslos ambientes. El Rattus novegicuspertenece al la familia Muridae. Históricamente, los roedores han estado cerca de los humanos durante siglos y donde hay humanos, posiblemente haya roedores. Los roedores y lagomorfas son animales comunes en las casas delos tutores, como mascotas poco convencionales por su gracia y docilidad. El objetivo de este trabajo científico es describir la ocurrencia de una neoplasia benigna raramente reportada en ratas, así como discutir la técnica quirúrgica y el protocolo anestésico exitosamente utilizado en el paciente.(AU)

Value of Immunohistochemistry to Differentiate Digital Papillary Adenocarcinoma From Acral Hidradenoma With Papillary Structures.

ABSTRACT: Digital papillary adenocarcinoma is a malignant adnexal tumor with a predilection for acral sites. Hidradenoma is a benign solid and cystic sweat gland neoplasm with focal ductal and glandular differentiation and good outcomes. Hidradenomas can occur at acral sites and show papillary structures; for this reason, they are included in the differential diagnosis of digital papillary adenocarcinoma, and immunohistochemistry is a valuable tool in this scenario. We described a case of a 43-year-old man with an epithelial tumor showing papillary structures in the intermediate phalanx of the fourth finger. There was diffuse positivity for p63 and negativity for S100 protein, suggesting that this tumor was an acral hidradenoma with papillary structures.

Perianal hidradenoma papilliferum / Hidradenoma papilífero perianal

ABSTRACT Hidradenoma papilliferum is a benign cystic tumor originated in apocrine sweat glands of the anogenital region. It is common in vulvar topography and rare in the perianal region. A well-documented case of a patient with slow-growing perianal nodulation without pain or other symptoms is reported. The histological study shows a hidradenoma papilliferum. The article reviews the topic and discusses the importance of the differential diagnosis of proctological conditions. A biopsy is mandatory in anal lesions of unusual presentation.

RESUMO O hidradenoma papilífero é um tumor cístico benigno originado nas glândulas sudoríparas apócrinas da região anogenital, sendo comum em topografia vulvar e raro na região perianal. Relata-se um caso bem documentado de paciente com nodulação perianal de crescimento lento, sem dor ou outros sintomas, cujo estudo histológico revelou se tratar de hidradenoma papilífero. O artigo revisa o tema e discute a importância do diagnóstico diferencial das afecções proctológicas, sendo a biópsia obrigatória em lesões anais de apresentação não-usual.

Clinicopathological evaluation of clear cell hidradenoma (acrospiroma) within multiple tumor complex in a dog

Background: Clear cell hidradenoma (acrospiroma) is adnexal tumors that arise from the distal excretory duct of eccrine sweat glands. It is generally defined in humanbeings. It presents solitary structure in firmness nodule. Most frequently are encountered in head, face, and upper extremities in humans. Hidradenomas are called generally by definition benign. Their malignant transformations and metastasis are seen very rarely. In veterinary literature database, the malignant form of tumor has been defined as an unique report in four dogs. They are extremely rare tumors in dogs. It is not documented within multiple tumor complex up to now.Case: In the case, three tumors were detected in a 9-year-old neutered female German shepherd dog. After clinical examination, a complete surgical resection of all masses was performed and masses were sent to Pathology for diagnosis. A mass on the right last rib was a 8x6 cm in diameters with severe ulceration. The mass had a hard texture, immobility and irregular borders. Other masses were localized on the back and left caudo-abdominal mammary lobe. Tumors on the back and the mammary lobe did not invade muscle layer, but the tumor on the last rib aggressively invaded surrounding tissue and were very difficult to remove surgically After macroscopy, all the masses were stained with hematoxylin-eosin (H&E), Mayers mucicarmine and Periodic Acid Shiff (PAS) stainings. In the first mass, there were multilobular epithelial islands between prominent fibrous septa from the upper to deep of dermis. The neoplastic cells were generally round or polyhedral in shape. Some of cytoplasms were eosinophilic at different degree. But cytoplasms were generally finely granular and vesicular or clear in appearance. Some cells had possible glycogen deposits. Nucleus was oval to round and had fine reticular chromatin and a distinct nucleolus.[...](AU)

Clinicopathological evaluation of clear cell hidradenoma (acrospiroma) within multiple tumor complex in a dog

Background: Clear cell hidradenoma (acrospiroma) is adnexal tumors that arise from the distal excretory duct of eccrine sweat glands. It is generally defined in humanbeings. It presents solitary structure in firmness nodule. Most frequently are encountered in head, face, and upper extremities in humans. Hidradenomas are called generally by definition benign. Their malignant transformations and metastasis are seen very rarely. In veterinary literature database, the malignant form of tumor has been defined as an unique report in four dogs. They are extremely rare tumors in dogs. It is not documented within multiple tumor complex up to now.Case: In the case, three tumors were detected in a 9-year-old neutered female German shepherd dog. After clinical examination, a complete surgical resection of all masses was performed and masses were sent to Pathology for diagnosis. A mass on the right last rib was a 8x6 cm in diameters with severe ulceration. The mass had a hard texture, immobility and irregular borders. Other masses were localized on the back and left caudo-abdominal mammary lobe. Tumors on the back and the mammary lobe did not invade muscle layer, but the tumor on the last rib aggressively invaded surrounding tissue and were very difficult to remove surgically After macroscopy, all the masses were stained with hematoxylin-eosin (H&E), Mayer’s mucicarmine and Periodic Acid Shiff (PAS) stainings. In the first mass, there were multilobular epithelial islands between prominent fibrous septa from the upper to deep of dermis. The neoplastic cells were generally round or polyhedral in shape. Some of cytoplasms were eosinophilic at different degree. But cytoplasms were generally finely granular and vesicular or clear in appearance. Some cells had possible glycogen deposits. Nucleus was oval to round and had fine reticular chromatin and a distinct nucleolus.[...]

Hidradenoma poroide del pie: presentación de un caso y revisión de la literatura / Poroid hidradenoma of the foot: a case report and literature review

El hidradenoma poroide fue descrito en el año 1990, por Abenoza y Ackerman, como una de las 4 variedades morfológicas de un poroma ecrino. Sus principales características son: muy baja frecuencia, localización intradérmica y aspecto sólido-quístico. Es más prevalente en la séptima década de la vida, sin predominio por género y su localización más frecuente es en cabeza y cuello. Presentamos el caso de un hidradenoma poroide del dorso del pie (AU)

Poroid hidradenoma was described in 1990, by Abenoza and Ackerman, as one the four morphological varieties of eccrine poroma. Its main characteristics: very low frequency, intradermal location and solid- cystic appearance. It is more prevalent in the seventh decade of life, with no gender predominance and the most frequent location is in the head and neck. A case of poroid hidradenoma in the foot dorsum is reported (AU)

[Hidradenoma papilliferum. Report of two cases and review of literature]. / Hidradenoma papilífero. Reporte de dos casos y revisión de la bibliografía.

We bring two cases of hidradenoma papilliferum, rare injury. We describe the clinical, histopathological and a review of the available literature on the condition.

Hidradenoma papilífero: reporte de tres casos y revisión de la literatura / Hidradenoma papilliferum: report of three cases and review of the literature

El hidradenoma papilífero es un tumor infrecuente que ocurre casi de manera exclusiva en la región anogenital de las mujeres, sin embargo se han descrito casos de hidradenomas papilíferos ectópicos. Las lesiones generalmente son asintomóticas de crecimiento lento, eritematosas, firmes, y se presentan como un nódulo bien delimitado. Reportamos tres casos de hidradedoma papilífero en región vulvar, diagnosticados entre 2009 y 2010 en el Hospital Universitario de Caracas. En los tres casos se presente una lesión única, nodular, en labio mayor, con diámetro < 10 mm, renitente, nacarada, no pruriginosa. Hasta la actualidad se ha reportado solo un caso en laliteratura venezolana

Hidradenoma papilliferum is a rare tumor that occurs almost exclusively in the anogenital region of women, however has been reports ectopic hidradenoma papilliferum. The lesions are usually asymptomatic, slow-growing, erythematous, firm, and are presented as awell-defined nodule. We report three cases of vulvar hidradenoma papillifirum, diagnosed between 2009 and 2010 at the Hospital Universitario de Caracas. In all three cases was presented as a single, nodular lesion in labia major with a diameter < 10mm, firm, pearly, not itchy. Until now it has been reported only one case in Venezuelan literature

Correlación clínico-patológica de poromas / Clinical-pathological correlation of poromas

Introducción: Poroma es un tumor benigno, del conducto excretor de las glándulas suporíparas. El diagnóstico diferencial es amplio: porocarcinoma, granuloma telangiectásico, melanoma, etc. Objetivos: Determinar la correlación clínico-patológica de los pacientes con diagnósticos de poroma durante los años 1994-2003 en el Centro de Histodiagnósticos Málaga, Santiago de Chile y la ubicación de estas lesiones. Materiales y Métodos: Se analizaron retrospectivamente 37.500 biopsias entre los años 1994-2003, seleccionando aquellas con diagnóstico histopatológico de poroma. Se analizó la ubicación, diagnóstico clínico de derivación y la correlación clínico-patológica. Resultados: El 0,1 por ciento de las biopsias examinadas tenía el diagnóstico de poroma. La ubicación clínica más frecuentes fue: pie (27 por ciento), muslo y pierna (20 por ciento), tórax (8 por ciento). Los diagnósticos clínicos de derivación fueron: granuloma telangiectásico (19 por ciento), angioma (8 por ciento), tumor benigno (8 por ciento), nevo (8 por ciento). Conclusiones: Sólo un 7,5 por ciento del total de biopsias con diagnóstico histológico de poroma, tuvieron diagnóstico clínico concordante.

Poroma écrino: relato de caso e revisäo de literatura / Eccrine Poroma: a case report and literature review

Este relato apresenta um caso de poroma écrino, uma neoplasia benigna e incomum da glândula sudorípara, localizado no torax de um menino de treze anos. Como os tumores anexiais têm classificaçöes controversas, os autores também fazem uma revisäo da literatura sobre poroma écrino abordando os mais recentes achados no seu diagnóstico e tratamento. O tumor apresentado neste relato chama a atençäo näo apenas pelo seu tamanho e pela idade do paciente mas também pelo local encontrado