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Search Results: 1 - 10 of 17 matches for " pinna "
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A rare interesting case of seborrheic keratosis of pinna  [PDF]
R. K. Mundra, Richa Agrawal, Richi Sinha
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.28122
Abstract: Seborrheic keratosis is a benign tumour of external ear originating from proliferative epithelial cells. Its most common site ranges from the retroauricular region to the helical rim. Diagnosis is made on the basis of clinical & histopathological examination. Here, we discuss the clinical presentation, differential diagnosis, pathological diagnosis and management of such a case.
Neurofibroma of the Pinna  [PDF]
Satinder Singh, Swati Tandon, Asish Lahiri, Shalabh Sharma
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2014, DOI: 10.4236/ijohns.2014.32014
Abstract:

Neurofibromas are relatively common lesions of the nervous system, but only a few cases involving the pinna have been reported. Isolated neurofibroma of pinna without neurofibromatosis has not been reported in the literature so far. Neurofibromas may develop anywhere in the body, including cranial and peripheral nerves. The type of impairment associated with neurofibromas depends largely on the site of the lesion. Cutaneous lesions, especially in the head and neck, generally cause deformity, whereas lesions that affect deeper systems (e.g., the auditory and ocular systems) are more likely to cause functional impairment. Usually found in individuals with neurofibromatosis, we report a case of neurofibroma of pinna in a patient without neurofibromatosis

Pseudocyst of the auricle
Kaur S,Thami G,Bhalla M
Indian Journal of Dermatology, Venereology and Leprology , 2003,
Abstract: Pseudocyst of the auricle is a rare, asymptomatic intracartilaginous swelling of the auricle resulting form accumulation of yellow viscous fluid with unknown cause. Various methods of treatment such as aspiration, corticosteroid injections and surgical intervention have been advocated for this condition. We report two cases treated successfully with a combination of aspiration, pressure dressing and oral corticosteroid therapy.
Pseudocyst of the auricle
Kaur S,Thami G,Bhalla M
Indian Journal of Dermatology, Venereology and Leprology , 2003,
Abstract: Pseudocyst of the auricle is a rare, asymptomatic intracartilaginous swelling of the auricle resulting form accumulation of yellow viscous fluid with unknown cause. Various methods of treatment such as aspiration, corticosteroid injections and surgical intervention have been advocated for this condition. We report two cases treated successfully with a combination of aspiration, pressure dressing and oral corticosteroid therapy.
Reconstru??o parcial de orelha pós-trauma: técnicas simples e eficazes
Ottat, Monica Rebello;
Brazilian Journal of Otorhinolaryngology , 2010, DOI: 10.1590/S1808-86942010000100002
Abstract: the growing number of ear trauma cases has brought about the need for simple and efficient solutions. aim: to be able to rebuild an ear partially injured by trauma, even in a small hospital setting. many techniques can be used; however, the solution can be the use of cutaneous or chondrocutaneous flaps. methods: to reconstruct the ear upper or middle thirds we used a mastoid cutaneous flap with or without a cartilage graft or a chondrocutaneous flap - chosen considering the size of the defect and the need for a cartilage graft. results: the patients were able to wear glasses and were pleased with the results. most of the patients ended up having a good helix and cartilaginous contour. some had hypertrophic scars on the grafted areas and two required a second procedure. conclusion: mastoid cutaneous flaps or local chondrocutaneous flaps can represent a good solution for partial ear loss after trauma. most of the patients had very high expectations concerning the procedure. this poses a major technical challenge for the surgeon and requires prior discussion with the patients regarding the true possibilities of outcome.
Primary sebaceous gland carcinoma of pinna
Agarwal Akhilesh,Gupta Souradip,Gupta Sandipan,Guha Gautam
Indian Journal of Dermatology , 2009,
Abstract: Sebaceous gland carcinoma is a rare cancer most commonly seen in the meibomian glands of the eyelid. It has predilection for periocular region and is rarely found in extra ocular sites. A case of sebaceous gland carcinoma over back of left pinna is reported.
Systematic implications of pinna venation and pinna anatomy in Zamiaceae
泽米科植物羽片脉序和解剖学及其系统学意义

Abstract,
唐源江
,刘念,廖景平,谢中誉,吴七根,陈家瑞

植物分类学报 , 2004,
Abstract: Pinna venation and pinna anatomy were examined in ten species of six genera of Zamiaceae (Cycadales), which represent all four tribes. Pinna venation consists of dichotomous parallel veins without a midrib. The vein endings connect to each other in different forms in Dioon spinulosum, Encephalartos friderici_guilielmii and Macrozamia moorei, while they are never connected and reach the pinna margin in Lepidozamia peroffskyana, Ceratozamia mexicana var. robusta, C. hildae, Zamia muricata, Z. debilis, Z. furfuracea and Z. floridana, and gradually fade out in L. peroffskyana, C. mexicana var. robusta, and C. hildae. In transverse section, pinna generally consists of an adaxial epidermis and an abaxial epidermis, hypodermal sclerenchyma and mesophyll which may be differentiated into distinct adaxial and abaxial palisade regions, or adaxial palisade only, or entirely spongy tissue. However, typical spongy parenchyma and transfusion tissue are absent from this family. Mucilage canals are opposite the vascular bundles in D. spinulosum, or alternate with vascular bundles in E. friderici_guilielmii, L. peroffskyana and M. moorei. Girder sclerenchyma is connected with the abaxial epidermis only in C. mexicana var. robusta and C. hildae, but with both adaxial and abaxial epidermis in Z. muricata, Z. debilis, Z. furfuracea and Z. floridana. Pinna venation and anatomy support Stevenson's classification of Zamiaceae into two subfamilies.
Systematic implications of pinna venation and pinna anatomy in Zamiaceae
泽米科植物羽片脉序和解剖学及其系统学意义

TANG Yuan-Jiang,LIU Nian,LIAO Jing-Ping,XIE Zhong-Yu,
唐源江
,刘念,廖景平,谢中誉,吴七根,陈家瑞

中国科学院研究生院学报 , 2004,
Abstract: Pinna venation and pinna anatomy were examined in ten species of six genera of Zamiaceae (Cycadales), which represent all four tribes. Pinna venation consists of dichotomous parallel veins without a midrib. The vein endings connect to each other in different forms in Dioon spinulosum, Encephalartos friderici-guilielmii and Macrozamia moorei, while they are never connected and reach the pinna margin in Lepidozamia peroffskyana, Ceratozamia mexicana var. robusta, C. hildae, Zamia muricata, Z. debilis, Z. furfuracea and Z. floridana, and gradually fade out in L. peroffskyana, C. mexicana var. robusta, and C. hildae. In transverse section, pinna generally consists of an adaxial epidermis and an abaxial epidermis, hypodermal sclerenchyma and mesophyll which may be differentiated into distinct adaxial and abaxial palisade regions, or adaxial palisade only, or entirely spongy tissue. However, typical spongy parenchyma and transfusion tissue are absent from this family. Mucilage canals are opposite the vascular bundles in D. spinulosum, or alternate with vascular bundles in E. friderici-guilielmii, L. peroffskyana and M. moorei. Girder sclerenchyma is connected with the abaxial epidermis only in C. mexicana var. robusta and C. hildae, but with both adaxial and abaxial epidermis in Z. muricata, Z. debilis, Z. furfuracea and Z. floridana. Pinna venation and anatomy support Stevenson's classification of Zamiaceae into two subfamilies.
Abundancia de juveniles y crecimiento de Pinna carnea (Mytiloida: Pinnacea) en cultivo suspendido
Narváez,N; Lodeiros,C; Freites,L; Nu?ez,M; Prieto,A;
Revista de Biología Tropical , 2000,
Abstract: we quantified the abundance of juvenile pinna carnea at turpialito, golfo de cariaco, venezuela, using collectors suspended at 8 m depth for 16 months and then evaluated their subsequent growth in suspended enclosures over 14 months in relation to concurrent measures of temperature and planktontonic food availability. all body components showed a rapid increase during the first four-five months. there was a decrease in somatic tissue mass and great variability in growth coincident at first spawning, suggesting a negative effect of gonadal production on somatic growth. a multiple regression analysis indicated a strong relationship between tissue growth and food availability as measured by organic sestonic matter. although we determinated an adequated spat abundance for culture activities (80 spat per collector-30x60 cm), spat collection was limited, mainly from february through april. in addition to high variability in growth and negative influence of environmental factors during unfavorable periods, the muscles production required in 14 months, suggesting that p. carnea is not appropriate for commercial production of muscle. however, the high weight of all edible tissues mass attained (21 g) and the high survival rate in all experimentation (96%) suggests thatp. carnea is fit for aquaculture.
Abundancia de juveniles y crecimiento de Pinna carnea (Mytiloida: Pinnacea) en cultivo suspendido
N Narváez,C Lodeiros,L Freites,M Nu?ez
Revista de Biología Tropical , 2000,
Abstract: Se evaluó la abundancia de juveniles de Pinna carnea, el crecimiento y su relación con factores ambientales en cultivo suspendido en Turpialito, Golfo de Cariaco, Venezuela. La abundancia se determinó usando colectores suspendidos a 8 m de profundidad en "long line" durante 16 meses. El crecimiento se determinó en cestas de cultivo en un "long line" a 8 m de profundidad y la temperatura y disponibilidad de alimento fueron registrados durante 15 meses. Todos los componentes del cuerpo se incrementaron rápidamente durante los primeros cuatro-cinco meses, posteriormente la masa de todos los tejidos somáticos muestran disminución y gran variabilidad en el crecimiento, coincidiendo con el primer período de desove, lo cual sugiere una influencia negativa de la gametogénesis en el crecimiento somático. Un análisis de regresión múltiple indicó una alta relación del crecimiento y la disponibilidad de alimento. Aunque se determinó una adecuada abundancia de juveniles (máximo 80 por colector-30x60 cm), la recolecta no fue continua. Esta característica, junto con la alta variabilidad del crecimiento y la influencia negativa de los factores ambientales en períodos desfavorables, además de la obtención de músculos de talla comercial en 14 meses, sugieren que la especie no es apropiada para la producción de músculos. Sin embargo, la elevada masa total de sus tejidos comestibles (21 g) y la alta sobrevivencia (96%), sugieren a P. carnea para ser cultivada. We quantified the abundance of juvenile Pinna carnea at Turpialito, Golfo de Cariaco, Venezuela, using collectors suspended at 8 m depth for 16 months and then evaluated their subsequent growth in suspended enclosures over 14 months in relation to concurrent measures of temperature and planktontonic food availability. All body components showed a rapid increase during the first four-five months. There was a decrease in somatic tissue mass and great variability in growth coincident at first spawning, suggesting a negative effect of gonadal production on somatic growth. A multiple regression analysis indicated a strong relationship between tissue growth and food availability as measured by organic sestonic matter. Although we determinated an adequated spat abundance for culture activities (80 spat per collector-30x60 cm), spat collection was limited, mainly from February through April. In addition to high variability in growth and negative influence of environmental factors during unfavorable periods, the muscles production required in 14 months, suggesting that P. carnea is not appropriate for commercial production of
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