Abstract：
:Free-living amebae are ubiquitous in our environment, but rarely cause cutaneous infection. Balamuthia mandrillaris has a predilection for infecting skin of the central face. Infection may be restricted to the skin or associated with life-threatening central nervous system (CNS) involvement. We report a case of a 91-year-old woman, who presented with a non-healing red plaque over her right cheek. Several punch biopsies exhibited non-specific granulomatous inflammation without demonstrable fungi or mycobacteria in histochemical stains. She was treated empirically for granulomatous rosacea, but the lesion continued to progress. A larger incisional biopsy was performed in which amebae were observed in hematoxylin-eosin stained sections. These were retrospectively apparent in the prior punch biopsy specimens. Immunohistochemistry and polymerase chain reaction studies identified the organisms as Balamuthia mandrillaris. Cutaneous infection by B. mandrillaris is a rare condition that is sometimes complicated by life-threatening CNS involvement and which often evades timely diagnosis due to its rarity and nonspecific clinical manifestations. Moreover, these amebae are easily overlooked in histopathologic sections because of their small number and their resemblance to histiocytes. Dermatopathologists should be familiar with the histopathologic appearance of these organisms and include balamuthiasis and other amebic infections in the differential diagnosis of granulomatous dermatitis.
journal_name
J Cutan Patholjournal_title
Journal of cutaneous pathologyauthors
Chang OH,Liu F,Knopp E,Muehlenbachs A,Cope JR,Ali I,Thompson R,George Edoi
10.1111/cup.12748subject
Has Abstractpub_date
2016-10-01 00:00:00pages
892-7issue
10eissn
0303-6987issn
1600-0560journal_volume
43pub_type
abstract：:Epithelioid cells with foamy cytoplasm (histiocytoid features) are typical histopathologic findings among benign and malignant histiocytic neoplasms such as xanthoma and atypical fibroxanthoma. However, these changes are unusual in melanoma, which is typically composed of nested and variably pigmented atypical epithel...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/cup.13263
更新日期：2018-07-01 00:00:00
abstract：:We describe the case of a cutaneous symplastic leiomyoma in a 37-year-old woman who presented with a 4-year history of a painful slow growing lesion on the left upper arm. The lesion was excised and subjected to histological examination. A poorly circumscribed lesion was seen in the dermis composed of spindle shaped c...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.2007.00803.x
更新日期：2008-03-01 00:00:00
abstract：:The rare presentation of choriocarcinoma as a cutaneous metastasis in a 23-year-old male is reported. Histological and immunohistochemical analysis of the biopsy material demonstrated two distinct cell populations, syncytiotrophoblasts and cytotrophoblasts, with syncytiotrophoblasts strongly positive for human chorion...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1995.tb01423.x
更新日期：1995-08-01 00:00:00
abstract：BACKGROUND:Myxoid liposarcoma typically presents as a deep-seated mass in the lower extremity of adults. Presentation as a primary subcutaneous tumor is rare. Here we discuss clinicopathologic characteristics of three such cases and their differential diagnosis to alert dermatopathologists to this unusual clinical pres...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/cup.12428
更新日期：2014-12-01 00:00:00
abstract：BACKGROUND:Hobnail hemangioma (targetoid hemosiderotic hemangioma) is a small benign vascular tumor of the superficial and mid-dermis. In contrast to its well-characterized histology, it has been unclear whether this tumor arises from blood vessel endothelial cells (BECs) or lymphatic vessel endothelial cells (LECs). ...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.0303-6987.2004.00192.x
更新日期：2004-05-01 00:00:00
abstract：BACKGROUND:Dermatofibroma (DF) and dermatofibrosarcoma protuberans (DFSP) occasionally resemble each other histologically but differ in histogenesis and biological behavior. This study sought to determine if these lesions can be differentiated by the quantity or quality of expression of cyclooxygenase-2 (COX-2), an enz...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.2007.00855.x
更新日期：2008-06-01 00:00:00
abstract：:Malignant mesothelioma (MM) is an aggressive and invasive neoplasm primarily affecting the pleura, peritoneum and pericardium. While mesothelioma commonly metastasizes to visceral organs, it has rarely been documented to involve the skin and subcutaneous tissue. There is a paucity of reports of cutaneous metastatic me...
journal_title：Journal of cutaneous pathology
pub_type：
doi：10.1111/cup.13026
更新日期：2017-12-01 00:00:00
abstract：BACKGROUND:Angiosarcomas arise in the scalp and face in the elderly, in association with chronic lymphedema (Stewart-Treves syndrome), and in irradiated areas. Rarely in these settings, angiosarcomas exhibit pure spindle cell phenotype. METHODS:Herein, the clinicopathologic features of a 72-year-old-woman with spindle...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1034/j.1600-0560.2002.290206.x
更新日期：2002-02-01 00:00:00
abstract：BACKGROUND:Tumor-infiltrating lymphocytes (TILs) are considered to play an important role in the antitumoral immune response. The presence and percentage of CD8-positive tumor-infiltrating T cells have been shown to correlate with differentiation and prognosis in various neoplasms. The aim of this study was to determin...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1034/j.1600-0560.2001.028009448.x
更新日期：2001-10-01 00:00:00
abstract：:This study compared the fine structure of macromelanosomes with that of giant melanosome complexes formed through melanosomal autophagocytosis in nevocytes and melanocytes of nevocellular nevi, lentigo simplex and malignant melanoma. While macromelanosomes were found only on rare occasions in these pigmentary disorder...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1982.tb01069.x
更新日期：1982-10-01 00:00:00
abstract：:Recently, T-cell lymphoma localized to the subcutaneous tissue has been reported. We report the clinical, histologic, immunohistochemical, and molecular genetic findings in 6 patients who we believe had this peculiar T-cell lymphoma with its unique morphologic and clinical features. All patients presented with deep-se...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1994.tb00244.x
更新日期：1994-04-01 00:00:00
abstract：:Polarizable calcium oxalate (CaOx) crystals have been well documented in breast biopsies, generally associated with benign apocrine metaplasia. In contrast, polarizable crystals are only rarely reported in skin adnexal neoplasms. We report 3 different cases of sweat gland tumors with polarizable crystals morphological...
journal_title：Journal of cutaneous pathology
pub_type：
doi：10.1111/cup.12962
更新日期：2017-08-01 00:00:00
abstract：:Neutrophilic panniculitis is an infrequent entity, considered by most authors as part of the 'neutrophilic dermatosis' spectrum. Few cases have been reported to be related with granulocyte colony-stimulating factor (G-CSF); we report a case of neutrophilic panniculitis and Sweet's syndrome lesions related with pegfilg...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/cup.12042
更新日期：2013-01-01 00:00:00
abstract：:Claudins are a family of transmembrane proteins involved in cell-to-cell adhesion and are believed to be the main component of tight junctions. Recent studies have suggested that some metastatic solid tumors lack claudin expression. It is unknown whether claudins play a role in cutaneous melanoma. Immunohistochemical ...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.0303-6987.2005.00324.x
更新日期：2005-09-01 00:00:00
abstract：:We examined 32 cases (38 lesions) of extramammary Paget's disease (EMPD) in relation to comparative studies on intraductal carcinoma of the breast (ductal carcinoma in situ, DCIS) and apocrine adenocarcinoma (AAC). Lesions included scrotum (18 lesions), vulva (8), axilla (6), groin (3), penis (2) and chest wall (1), a...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1990.tb00099.x
更新日期：1990-10-01 00:00:00
abstract：:A survey of conditions with mucinous deposits is given. The most important factors for their diagnosis are to consider these disorders and to stain the slides for proteoglycans or glycosaminoglycans; the most common routine techniques are the Giemsa and the Alcian-blue stain. More sophisticated methods allow different...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1985.tb01637.x
更新日期：1985-06-01 00:00:00
abstract：:Two cases of juvenile elastoma (nevus elasticus in disseminated tumors) were histologically and ultrastructurally investigated. The predominant components of this disseminated dysembryoplasia are abnormal elastic fibers. Both cases showed numerous large elastic fibers with an abundant background matrix. The elastic mi...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1981.tb01001.x
更新日期：1981-06-01 00:00:00
abstract：AIM:Adnexal tumors with divergent lines of differentiation are uncommon. Herein, I report a hamartoma of the eyelid with follicular, sebaceous and apocrine differentiation that exhibited prominent melanin pigmentation. METHODS:A 63-year-old white woman had a nodule present on her left upper eyelid for 15 years. The no...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.2007.00745.x
更新日期：2007-11-01 00:00:00
abstract：:Brooke-Spiegler syndrome represents an autosomal dominant disease characterized by the occurrence of multiple cylindromas, trichoepitheliomas and (sporadically) spiroadenomas. Patients with Brooke-Spiegler syndrome are also at risk of developing tumors of the major and minor salivary glands. Patients with Brooke-Spieg...
journal_title：Journal of cutaneous pathology
pub_type： 临床试验,杂志文章
doi：10.1111/j.1600-0560.2011.01813.x
更新日期：2012-03-01 00:00:00
abstract：:The three-dimensional morphology of six dermatofibromas was studied by scanning electron microscopy. Hypertrophic epidermal ridges covered with large keratinized cells overlay each dermal lesion. Small collagenous fibers in the tumors contrasted with the bundles of much larger collagenous fibers in the normal dermis p...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1979.tb01141.x
更新日期：1979-08-01 00:00:00
abstract：BACKGROUND:Trichilemmal (pilar) cysts are common skin lesions that usually occur on the scalp of elderly women. They differentiate towards the follicular outer root sheath epithelium and show trichilemmal keratinization. Proliferating trichilemmal tumor (PTT) shows features of typical pilar cyst, but additionally shows...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1034/j.1600-0560.2003.00041.x
更新日期：2003-09-01 00:00:00
abstract：:Epidermolytic hyperkeratosis (EH) is a well-described histopathologic pattern characteristic of bullous congenital ichthyosiform erythroderma, an autosomal dominant genodermatosis. It is also noted in cutaneous disorders where mosaicism leads to containment of the clinical and histopathologic changes. EH has been obse...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.2006.00612.x
更新日期：2007-04-01 00:00:00
abstract：BACKGROUND:Direct immunofluorescence (DIF) is a valuable tool in the diagnosis of cutaneous lupus erythematosus (LE). Our goal was to characterize the most frequent immune reactants in the skin biopsies of cutaneous LE and identify the most common immunofluorescence staining patterns. METHODS:DIF results of immunoglob...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.0303-6987.2005.00337.x
更新日期：2005-05-01 00:00:00
abstract：:Sebaceous gland neoplasms such as adenoma, epithelioma, and carcinoma are uncommon cutaneous tumors. Although sporadic, their occurrence is clinically significant because of their association with Muir-Torre syndrome (MTS). MTS is a rare autosomal dominant genodermatosis characterized by the occurrence of sebaceous gl...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章,评审
doi：10.1111/j.1600-0560.2009.01248.x
更新日期：2009-06-01 00:00:00
abstract：:Two young patients with conjunctival compound nevi are presented to illustrate two types of abnormalities that lead to difficulty in distinction of these nevi from invasive melanomas. In Case 1, inflammation is associated with disruption of the nevus cell architecture and cytologic atypia. In Case 2, the occurrence of...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1999.tb01838.x
更新日期：1999-05-01 00:00:00
abstract：:An extensive congenital melanocytic nevus is described which, in its deeper portion, had striking neurofibromatous features. At the dermal subcutaneous junction, there were prominent subendothelial collections of nevus cells in large veins. Similar findings have been described in neurofibromatosis. The apparent relati...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1979.tb01180.x
更新日期：1979-12-01 00:00:00
abstract：BACKGROUND:Elastophagocytosis, or elastic fiber phagocytosis by multinucleate macrophages, has been observed in different skin conditions that may or may not occur on sun-exposed skin. Although loss of elastic fibers has been well documented in the homogenized papillary dermal zone in lichen sclerosus (LS), elastophago...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.2010.01575.x
更新日期：2010-10-01 00:00:00
abstract：:Characteristic moniliform hairs of monilethrix were ultrastructurally examined. By scanning electron microscope, nodes and internodes were seen alternating on the affected hair; the nodes were normal in appearance and thickness, while the internodes were thin and showed ridges and flutes. By transmission electron micr...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/j.1600-0560.1984.tb00412.x
更新日期：1984-12-01 00:00:00
abstract：:A 54-year-old female presented with the cutaneous metastases of the breast carcinoma that produced combination of pigmented zosteriform eruption on the trunk and eroded plaque on the scalp, 13 years after radical mastectomy. Histologically, zosteriform lesions displayed prominent infiltration of the epidermis in nesti...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1034/j.1600-0560.2003.00130.x
更新日期：2003-11-01 00:00:00
abstract：BACKGROUND:Melanoma staging has depended on depth of invasion (Breslow thickness, BT), mitotic rate (MR) and ulceration. In anticipation of the AJCC's eighth edition, variability in pathologists' assessment of these factors and consequently in tumor staging was assessed. METHODS:One-hundred and fifteen cases of invasi...
journal_title：Journal of cutaneous pathology
pub_type： 杂志文章
doi：10.1111/cup.13265
更新日期：2018-08-01 00:00:00
