Abstract:
BACKGROUND:Pigmentation is a characteristic clinical feature of basal cell carcinomas (BCCs) in Japanese patients. The pathogenesis of melanin pigment in pigmented BCCs is poorly understood. METHODS:We have combined the techniques of morphometric analysis and electron microscopy to assess accurately the morphologic aspects of melanocytes that occurred in pigmented and non-pigmented areas of pigmented BCCs. RESULTS:In the pigmented areas melanocytes were not only located along the basal membrane but also interspersed between tumor cells in the central parts of the tumor nest, and had large and numerous dendrites. Those in a supra-basal location displayed some degree of degeneration due to mitochondrion and melanosome swelling. In the non-pigmented areas melanocytes were only basally located, showed fewer dendrites, and frequently showed abortive melanosomes. However, melanocytes in these two different portions were in the active state of melanogenesis and proliferation. Ultrastructural cytomorphometric analysis also showed significant differences in most of the nuclear and cell parameters including nuclear and cell area, the nuclear/cell area ratio, cell perimeter and cell form factor between these two types of melanocytes. Particularly melanocytes in the pigmented areas were twice the cell size of the latter. In addition, the melanosomes remained almost completely in the apoptotic tumor cells, and the phagocytosis of the melanosome-containing apoptotic cells by the neighboring tumor cells appeared to be followed by the formation of the melanosome complexes. CONCLUSIONS:These findings suggest that different populations of melanocytes are probably present in pigmented BCCs, and repeated cycles of phagocytosis of melanosome-containing apoptotic cells may represent the predominant way of forming large melanosome complexes. The present morphological observation and quantitative analysis provide a morphological basis for further studies to interpret other pathologic changes in pigmented BCCs.
journal_name
J Cutan Patholjournal_title
Journal of cutaneous pathologyauthors
Lao LM,Kumakiri M,Kiyohara T,Kuwahara H,Ueda Kdoi
10.1034/j.1600-0560.2001.280104.xkeywords:
subject
Has Abstractpub_date
2001-01-01 00:00:00pages
34-43issue
1eissn
0303-6987issn
1600-0560pii
cup280104journal_volume
28pub_type
杂志文章abstract:BACKGROUND:Hypertrophic lichen planus (LP) is a variant of LP favoring the lower extremities and showing prominent epidermal hyperplasia and hyperorthokeratosis. Contrary to dogma that eosinophils are rare in LP and variants, we noticed that some cases of hypertrophic LP have eosinophils in the absence of drug history....
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12275
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:Cicatricial forms of alopecia, including lichen planopilaris (LPP) and discoid lupus erythematosus (DLE), may present with overlapping clinical features. In such cases, histopathological examination may provide key information for resolving the differential diagnosis. Optimally, microscopical analysis for al...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2010.01669.x
更新日期:2011-05-01 00:00:00
abstract::Study of 18 patients with biopsy diagnoses of eosinophilic panniculitis revealed diverse patterns of systemic disease, including Wells' syndrome, vasculitis, atopy, and erythema nodosum as well as localized panniculitis. Significant associated diseases included psychiatric illness, 6 (drug dependency, 4); atopy, 5 (as...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1986.tb00455.x
更新日期:1986-02-01 00:00:00
abstract::Human hair follicles (HF) and sebaceous glands (SG) were assessed for the presence and distribution of the cytochrome P-450-aromatase (AR) and 3B-hydroxysteroid dehydrogenase (3B-HSD) enzymes. Immunohistochemical methods were used to examine both enzymes in male and female human skin specimens at various ages and diff...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1992.tb01367.x
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND:De novo intraepidermal epithelioid melanocytic dysplasia (DNIEMD) is a newly characterized lesion that is associated with a personal and/or family history of malignant melanoma (MM) and/or dysplastic nevi (DN). However, the biological significance is still uncertain and the persons predisposed to this lesion...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2009.01429.x
更新日期:2010-08-01 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::Two cases of fibrous papule of the nose (FPN) with granular cell features are presented and discussed. Both lesions have classic architectural features of FPN; however, the main stromal cells show large cytoplasmic granules of the type seen in granular cells. We are uncertain of the significance of these findings. Our...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1991.tb01237.x
更新日期:1991-08-01 00:00:00
abstract::Sinonasal non-keratinizing squamous cell carcinoma (SCC), previously designated as transitional cell carcinoma or cylindrical cell carcinoma, is an uncommon malignant neoplasm with distinct histopathological features, considered to be a low-grade malignancy that usually occurs in elderly patients. Extensive local inva...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2012.01939.x
更新日期:2012-08-01 00:00:00
abstract::Fifteen halo nevi were stained for the presence of S100 protein by an unlabelled antibody peroxidase-antiperoxidase method. S100 protein was clearly identifiable within nevus cell nests in the inflammatory infiltrate. The presence of this substance helped to identify nevus cells in dense inflammatory infiltrates and c...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1985.tb00426.x
更新日期:1985-02-01 00:00:00
abstract::Infundibulocystic basal cell carcinoma (IBCC) is a relatively recently described variant of basal cell carcinoma that is controversial and not universally accepted. Excluding cases of nevoid basal cell carcinoma syndrome, IBCC usually presents as a small, solitary, superficial lesion on the face of older persons. Ther...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2000.027006316.x
更新日期:2000-07-01 00:00:00
abstract::A 27-year-old woman developed many nodular lesions, ranging in diameter from 3 mm to 15 mm and clinically indistinguishable from dermatofibromas. Light microscopic examination showed large amounts of mucin, fibroblasts and histiocytes throughout the dermis. Electron microscopic study revealed wide electron lucent area...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1980.tb01206.x
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:Carcinoma cuniculatum and verrucous carcinoma are both very well differentiated forms of squamous carcinoma and thus difficult to separate histologically from pseudocarcinomatous hyperplasia. The diagnosis of each often requires clinical-pathologic correlation. METHODS:We reviewed the literature on cases re...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12016
更新日期:2012-12-01 00:00:00
abstract:BACKGROUND:Although a range of cytomegalovirus (CMV)-induced cutaneous manifestations is described in AIDS patients, skin involvement in immunocompromised patients is rare, and intraneural CMV inclusions or CMV neuritis has not been documented in skin biopsies. METHODS AND RESULTS:Cutaneous biopsies of CMV lesions wer...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2002.290709.x
更新日期:2002-08-01 00:00:00
abstract::Nevic corpuscle in the pigmented nevus was studied under light microscopy in comparison with Meissner corpuscle of the human sole skin in order to determine its ontogenesis. No nerve fibers within nevic corpuscle but coiled fibers in Meissner corpuscle could be demonstrated by Bodian stain. Presence of S-100 protein i...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1984.tb00364.x
更新日期:1984-04-01 00:00:00
abstract:BACKGROUND:Glial cell line-derived neurotrophic factor (GDNF) and a related family member, neurturin (NTN), as well as their cognate receptors (GDNF receptors, GFRalpha-1 and GFRalpha-2, respectively) are involved in nervous system development and murine hair cycle control. To date, their expression in human scalp skin...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2006.00561.x
更新日期:2006-12-01 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:BACKGROUND:Cutaneous epithelioid angiosarcoma is a type of cutaneous angiosarcoma and usually arise both on the head or neck of the elderly. CASE REPORT:An 86-year-old male with an epithelioid angiosarcoma of the scalp that mimicked malignant melanoma. RESULTS:A large irregular dark grey-blue plaque with an adjacent ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.0303-6987.2006.00387.x
更新日期:2006-01-01 00:00:00
abstract::We report a rare case of multiple, co-exisitng verruciform xanthomas (VXs) of the anogenital region in the setting of cutaneous trauma. VX is a rare benign mucocutaneous neoplasm that typically presents as a solitary lesion with a predilection for the oral cavity, although extra-oral lesions have been reported involvi...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2009.01470.x
更新日期:2010-08-01 00:00:00
abstract::Extravasation of doxorubicin in skin and soft tissue causes necrosis and ulceration. These ulcers form slowly and heal with great difficulty. The cause of ulceration is not known. Histologic changes in two patients suggest that an exaggeration of interface dermatitis like epidermal changes may be responsible for epide...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1989.tb00032.x
更新日期:1989-06-01 00:00:00
abstract:BACKGROUND:Cutaneous manifestations of B-cell chronic lymphocytic leukemia (B-CLL) comprise a wide spectrum of clinicopathologic presentations. In some cases, onset of skin lesions is triggered by antigenic stimulation, and specific skin infiltrates at sites of previous herpes simplex or herpes zoster infection have be...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2002.290303.x
更新日期:2002-03-01 00:00:00
abstract::CD44 is a widely distributed cell surface protein thought to be involved in multiple steps of normal immune cell function, including T-cell activation, and in cellular adhesion where it mediates cell attachment to hyaluronate. In normal skin, CD44 is found by immunohistochemical means to be primarily in eccrine coil c...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1994.tb00265.x
更新日期:1994-06-01 00:00:00
abstract::The plasma membrane ultrastructure of the extramammary Paget cells was characterized by freeze-fracture electron microscopy, which was first employed for the study of Paget cells. The Paget cell plasma membrane revealed a flat fractured plane with much fewer and smaller desmosome-particle aggregations than those of th...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1980.tb01210.x
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:Apocrine carcinomas are rare, the immunohistochemical characterizations that are incomplete. The purpose of this study was to determine the immunohistochemical characteristics of mucin core proteins and keratins in apocrine carcinoma, extramammary Paget's disease (EMPD) and apocrine nevus. METHODS:We report...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2008.01087.x
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:The diagnosis of tuberculoid leprosy is often difficult on hematoxylin and eosin (H&E) due to the absence of demonstrable nerve destruction. This study evaluates the utility of S-100 staining in identifying nerve fragmentation and differentiation of tuberculoid leprosy from other cutaneous granulomatous dise...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2006.00457.x
更新日期:2006-07-01 00:00:00
abstract::Respiratory cysts are benign lesions lined by normal respiratory epithelium. There are few reported cases localized to the orbit, while those of the eyelid are exceedingly rare. Respiratory cysts usually arise either from a non-hereditary congenital malformation, where they are distinguished as choristomatous, or from...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13898
更新日期:2021-01-01 00:00:00
abstract::Proliferation of the eccrine sweat duct epithelium has been associated with skin tumors, especially keratoacanthomas and basal cell carcinomas. We report our observations on the extensive sweat gland changes in a patient who had idiopathic follicular mucinosis. ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1987.tb00495.x
更新日期:1987-06-01 00:00:00
abstract::To explore the clinicopathological features of a rare dedifferentiated liposarcoma (DDLPS) with meningothelial-like whorls, we retrospectively analyzed 46 reported cases and 1 case that we encountered. Fluorescence in situ hybridization (FISH) analysis of the MDM2 amplification status of our case was also performed. O...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13621
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:Chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) is associated with an increased risk of a second malignancy. METHODS:We conducted a retrospective clinicopathologic review of 12 patients with CLL/SLL who developed a second lymphoma in the skin. Demographic data, clinical information, and hi...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.13956
更新日期:2021-01-07 00:00:00
abstract:BACKGROUND:Papillomatous stoma-related skin lesions may result from irritant reactions or infection with epidermodysplasia verruciformis human papillomavirus (HPV) types. METHODS:We report upon a papillomatous lesion at the ileostoma of a 63-year-old male with familial adenomatous polyposis and colorectal adenocarcino...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1046/j.0303-6987.2003.048.x
更新日期:2003-04-01 00:00:00
abstract::We have previously shown that human metallopanstimulin (MPS-1) is a ubiquitous 9.4-kDa multifunctional ribosomal S27/nuclear "zinc finger" protein which is expressed at high levels in a wide variety of cultured proliferating cells and tumor tissues, including melanoma. In the present study, we have examined the expres...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0560.1997.tb01457.x
更新日期:1997-10-01 00:00:00