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Eosin Stain (eosin + stain)
Selected AbstractsCutaneous sclerosing perineurioma of the digitINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 9 2006Toshitsugu Nakamura MD An 11-year-old Japanese girl noticed a small nodule, with mild tenderness, on the right index finger 5 years before visiting our outpatient clinic. She had no familial history of neurofibromatosis or past history of traumatic injury at the site of the tumor. Physical examination revealed a slightly elevated, subcutaneous, nodular tumor in the volar aspect between the proximal and distal interphalangeal joints of the digit (Fig. 1A). By magnetic resonance imaging examination, the tumor showed low density on both T1- and T2-weighted images, and was located just adjacent to the tendon with no invasive signs. The tumor was extirpated; at operation, it was well circumscribed and mobile without adhesion to adjacent tendon or nerve, and was easily removed. Figure 1. (a) Slightly elevated subcutaneous tumor (arrow) on the volar aspect of the right index finger. (b) gross appearance of the extirpated tumor, showing a well-circumscribed, whitish solid nodule Grossly, the tumor was a well-circumscribed, firm nodule (10 mm × 8 mm × 5 mm in size) (Fig. 1B). The cut surface was whitish, homogeneous, and solid without cystic lesions. Histologically, it was an unencapsulated, paucicellular dense, fibrous nodule with a concentric circular arrangement of collagen bundles (Fig. 2A). Amongst the fibrous bundles, a small number of ovoid/epithelioid or plump spindle cells were arranged in a corded, trabecular, or whorled (onion bulb-like) pattern (Fig. 2B); a storiform pattern was not noted. These cells were relatively uniform and had a somewhat elongated, slightly hyperchromatic nucleus with fine granular chromatin. Neither nuclear pleomorphism nor multinucleated cells were evident, and necrosis and mitotic figures were not observed. Periodic acid,Schiff (PAS) stain after diastase digestion highlighted the corded or whorled pattern of the tumor cells by encasing them. For immunohistochemical examination, formalin-fixed, paraffin-embedded serial tissue sections were stained by a labeled streptavidin,biotin method. The tumor cells were positive for vimentin and epithelial membrane antigen (EMA) (Fig. 3A), and negative for pan-cytokeratin, carcinoembryonic antigen (CEA), CD34, ,-smooth muscle actin, desmin, and CD68. Type IV collagen and laminin (Fig. 3B) were detected along the cords or whorls of the tumor cells, similar to the staining pattern of the diastase-PAS reaction. Schwann cells and axonal components, immunoreactive for S100 protein and neurofilament, respectively, were focally detected just adjacent to the cords or whorls, although the tumor cells per se did not express these proteins. Consequently, the tumor was found to be perineurial in origin and was diagnosed as cutaneous sclerosing perineurioma. Figure 2. (a) Low-power view of the tumor, showing an unencapsulated, paucicellular, dense, fibrous nodule with a concentric circular arrangement of collagen bundles (hematoxylin and eosin stain: original magnification, ×15). (b) Higher magnification of the tumor, showing ovoid or epithelioid cells arranged in cords or whorls in the abundant collagen bundles (hematoxylin and eosin stain: original magnification, ×150) Figure 3. Immunohistochemical profiles of the tumor. The tumor cells are positive for epithelial membrane antigen (a) and are surrounded by laminin (b) (original magnification, ×150) [source] A case of erythema elevatum diutinum associated with breast carcinomaINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 11 2005Fikriye Yilmaz MD A 53-year-old woman diagnosed with invasive ductal-type breast carcinoma was referred to our clinic with red,purple lesions on the hands and legs. She had neither pruritus nor pain. The first lesion developed on the dorsal hand. In the following days, new lesions appeared on the extensor surface of the legs. The patient had been treated with modified radical mastectomy and three courses of cyclophosphamide, adriamycin, and fluorouracil chemotherapy. Dermatologic examination revealed reddish-violaceous papules and plaques ranging from a few millimeters to 2 cm in diameter, bilaterally located on the dorsal hands, especially over the metacarpophalangeal and interphalangeal joints (Fig. 1). Multiple red,purple, circumscribed papules and plaques of various diameters were observed bilaterally over the shins (Fig. 2). The largest of these plaques showed an annular configuration. The nails showed distal subungual keratosis and yellow discoloration. The rest of the physical examination was normal. Figure 1. Violaceous papules and plaques on the dorsal hands Figure 2. Red,purple, circumscribed, papules and plaques over the shins A biopsy taken from the medial side of the shin revealed a predominantly neutrophilic infiltrate and nuclear dust around the dermal vessels and orthokeratotic stratum corneum (Fig. 3). Figure 3. Predominantly neutrophilic infiltrate and nuclear dust around the dermal vessels and orthokeratotic stratum corneum (hematoxylin and eosin stain, ×100) Complete blood count, routine biochemical tests and fasting lipids, serologic tests of bacterial and viral agents, serum electrophoresis, and serologic profiles for autoimmune connective tissue diseases revealed normal results. Mycologic examination of nail clippings did not show any evidence of fungal infection. In the light of our clinical and histopathologic findings, a diagnosis of erythema elevatum diutinum was made, and the patient was given topical clobetasol propionate therapy. Complete clearance was achieved in 3 weeks (Fig. 4). After six courses of cyclophosphamide, adriamycin, and fluorouracil chemotherapy, and radiotherapy, no recurrence of erythema elevatum diutinum lesions was observed. Figure 4. Healed lesion 3 weeks after high-potency topical glucocorticoids [source] Finger pebbles in a diabetic patient: Huntley's papulesINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 9 2005Claudio Guarneri MD A 60-year-old obese man was referred to our department from the internal medicine unit. He had a 20-year history of poorly controlled diabetes (no other cases in the family), and was admitted to hospital because of respiratory and consequent heart failure. Skin examination showed diffuse xerosis and a rough, sandpaper-like appearance of the skin of the finger, of approximately 15 years' duration, consisting of multiple, minute, hyperkeratotic papules grouped in a miniature "cobblestone" pattern on the dorsum of the distal phalanges (Fig. 1), more dense over the knuckles and the interphalangeal joints. No pruritus was present. Figure 1. Pebbly pattern of the skin on the dorsum of the second digit He was a pensioner, who had been physically inactive for months previously, and this condition had occurred progressively in the absence of any known trauma. No other cutaneous manifestations were evident. Histologic examination was performed using hematoxylin and eosin staining of a biopsy specimen taken from the left second finger; it displayed a hyperorthokeratotic epidermis with enlarged dermal papillae, thickened and vertically oriented collagen bundles, few elastic fibers, and a mild perivascular inflammatory infiltrate (Fig. 2). Figure 2. Histologic view of a biopsy specimen of the skin of the finger: the epidermis is hyperkeratotic, the dermal papillae are enlarged and there are thickened vertical collagen bundles, elastic fibers, and a mild perivascular inflammatory infiltrate (hematoxylin and eosin stain; original magnification, ×100) [source] Two cases of reactive perforating collagenosis arising at the site of healed herpes zosterINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 3 2001Hye Nam Lee MD Case 1 A 67-year-old South Korean woman presented with a painful eruption on the left trunk. Several groups of vesicles with an erythematous and edematous base were situated unilaterally within the distribution of the left T9 dermatome; they had been present for 7 days. A diagnosis of herpes zoster was made, and treatment with acyclovir, analgesics, tranquilizers, and wet dressings produced a moderate response. Two weeks after onset, the lesions appeared to have healed with a scar. Four months later, however, the patient noticed another eruption of papules in the postherpetic area (Fig. 1A,B). Figure 1. Case 1. (A) Multiple erythematous papules on the left trunk along the T9 dermatome. (B) Multiple erythematous papules with a keratotic central plug The biopsy specimen showed a cup-shaped epidermal invagination filled with a keratotic plug containing basophilic debris and collagen, with perforation of the epidermis. Masson's trichrome stain identified refractile fibers within the epidermis as hyalinized and degenerating collagen. Van Gieson staining for elastic fibers was negative in the epidermis and in the crater. These findings are consistent with reactive perforating collagenosis (RPC). Case 2 A 66-year-old South Korean woman developed herpes zoster of the left neck and shoulder, which resolved after an uncomplicated course. Two months later, a zosteriform, pink, papular eruption developed at the site of the resolved herpes zoster. Examination revealed multiple, erythematous papules with a central umbilication containing a firmly adherent keratotic plug on the left shoulder and neck (Fig. 2A). Figure 2. Case 2. (A) Multiple erythematous papules on the left neck and shoulder along the C4 dermatome. (B) Cup-shaped epidermal invagination filled with keratotic plug containing basophilic debris and degenerated collagen, with perforation of the epidermis (hematoxylin and eosin stain, ×,100) The biopsy specimen showed a dome-shaped lesion with a central crater that extended from the epidermis to the papillary dermis and contained degenerated collagen in vertical strands (Fig. 2B). [source] Juvenile psoriatic arthritis with nail psoriasis in the absence of cutaneous lesionsINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 1 2000Carola Duran-McKinster MD A 4-year-old white boy without a significant family history had morning stiffness and painful swelling of his left knee and ankle, right elbow, and dorsolumbar region of 2 months' evolution. The following laboratory studies were within normal limits: complete blood cell count, C-reactive protein (CRP), latex, antistreptolysin, and antinuclear antibodies. Rheumatoid factor was negative and an increase in the erythrocyte sedimentation rate (ESR) was detected (56 mm/h). The pediatric department made an initial diagnosis of juvenile rheumatoid arthritis, and treatment with acetylsalicylic acid at 100 mg/kg/day and naproxen at 10 mg/kg/day was started. A thick, yellowish toenail was diagnosed as onychomycosis. No mycologic investigations were performed. Intermittent episodes of painful arthritis of different joints were present. The radiographic features of the peripheral joints included: narrow joint spaces, articular erosions, soft tissue swelling, and diffuse bony demineralization. Characteristic bilateral sacroiliitis and a swollen tendon sheath on the left ankle were detected. At 11 years of age the nail changes had extended to five other toenails and to four fingernails, were yellow,brown in color, and showed marked subungual hyperkeratosis ( Figs 1, 2). The rest of the nails showed significant nail pitting. Trials of griseofulvin alternated with itraconazole in an irregular form for five consecutive years resulted in no clinical improvement, which prompted a consultation to our dermatology department. On three different occasions, KOH nail specimens were negative for fungus, but the presence of parakeratotic cells aroused the suspicion of psoriasis. A complete physical examination was negative for psoriatic skin lesions. A nail bed biopsy specimen was characteristic of nail psoriasis ( Fig. 3). Figure 1. Thickened nails with severe subungual hyperkeratosis in five fingernails Figure 2. Secondary deformity of nail plate. No "sausage" fingers were observed Figure 3. Light microscopic appearance of a nail biopsy specimen showing parakeratotic hyperkeratosis, elongation of interpapillary processes, and Munroe abscess (arrow) (hematoxylin and eosin stain, ×40) The following human leukocyte antigens (HLAs) were positive: A9, A10, B12, B27, Cw1, Bw4, DR6, DR7, DQ1, DQ2, and DR53. A diagnosis of juvenile psoriatic arthritis associated with nail psoriasis was made. Toenail involvement became so painful that walking became very difficult. Occlusive 40% urea in vaseline applied to the affected toenails for 48 h resulted in significant improvement. Currently, the patient is 20 years old with nail involvement, but no psoriatic skin lesions have ever been observed. [source] THIS ARTICLE HAS BEEN RETRACTED CD34-reactive tumors of the skin.JOURNAL OF CUTANEOUS PATHOLOGY, Issue 12 2008An updated review of an ever-growing list of lesions Over the past few years, a growing number of cutaneous tumors expressing CD34 is being reported. The list contains benign and malignant neoplasms as well as reactive and hamartomatous lesions of diverse lineages of differentiation, including fibroblastic, myofibroblastic, fibrohistiocytic, vascular, neural, adipocytic, smooth muscle, hematopoietic, melanocytic and epithelial. The more frequent diagnostic difficulties are found in spindle cell proliferations, mainly in those of the fibrocytic lineage. In part, this is because of the fact that in this area are, aside to well-defined entities, histologically and clinically diverse, recently reported cutaneous CD34-reactive lesions, whose definitions, limits and relationships are not completely established. The CD34 expression plays a key role in the differential diagnosis of some tumors, such as dermatofibrosarcoma protuberans, epithelioid sarcoma (ES) or pleomorphic hyalinizing angiectatic tumor of soft parts, with important therapeutic consequences. In others, as in desmoplastic trichilemmoma, it can help to resolve diagnostic problems in concrete cases. Finally, in many of the CD34-positive lesions, the diagnosis with the hematoxylin and eosin stain is straightforward. However, in all of them, the knowledge of the immunohistochemical profile contributes to our understanding of the cutaneous pathology. [source] Age-related changes of cornu ammonis 1 pyramidal neurons in gerbil transient ischemiaNEUROPATHOLOGY, Issue 3 2000Chiharu Tamagaki This study reports that postischemic apoptotic cell death of the hippocampal cornu ammonis (CA) 1 neurons is delayed in aged gerbils. Age-related changes in the process of CA1 neuronal death following transient ischemia was studied. Two groups of Mongolian gerbils were used in this study, which compared adult (4-month-old) and aged (24-month-old) animals by hematoxylin,eosin stain, in situ nick-end labeling (TUNEL method) and electron microscopy. In the process of neuronal death, neuronal loss of the aged group was histologically less severe than that of the adult group. TUNEL-positive cells were found on days 3,5 after ischemia in the adult group, while they were still found on day 7 in the aged group. The apoptotic process of the aged group was delayed compared to the adult group. Furthermore, lipofuscin was ultrastructurally observed inside the apoptotic body 5 days after ischemia in CA1 pyramidal neurons of the aged group. It is likely that colocalization of lysosomal enzyme cathepsin D with lipofuscin might be associated with the age-related alteration of lysosomal system in the neurons. Altogether these data suggest that age-related lysosomal changes might affect the apoptotic cascade process in postischernic CA1 neurons. [source] Congenital myopathies , a comprehensive update of recent advancementsACTA NEUROLOGICA SCANDINAVICA, Issue 5 2009M. C. Sharma The congenital myopathies are relatively newly discovered compared with other categories of muscle diseases. Current research continues to clarify and classify the congenital myopathies. These pose a diagnostic problem and cannot be diagnosed by routine hematoxylin and eosin stain. A lot of special techniques are required to diagnose them correctly and it's various subtypes. The disease specific structural changes seen in the muscle are detected by enzyme histochemistry, immunohistochemistry and electron microscopy. Through this review we provide an up-to-date analysis of congenital myopathies including clinical and pathologic aspects. [source] Expression and role of Notch signalling in the regeneration of rat tracheal epitheliumCELL PROLIFERATION, Issue 1 2009X.-B. Ma Objectives:, This study is to explore the role of Notch signalling during the regeneration of rat tracheal epithelium after injury induced by 5-fluorouracil (5-FU). Materials and methods:, We developed an ex vivo model of rat tracheal epithelial regeneration using 5-FU to induce injury. Expression levels of members of the Notch signalling pathway, ABCG2, CK19, and proliferating cell nuclear antigen (PCNA) were examined by reverse transcription,polymerase chain reaction, Western blot, and immunofluorescence. One group of tracheas were cultured in the medium with a ,-secretase inhibitor or Jag-1 peptide after 5-FU treatment and another group were pre-treated with the ,-secretase inhibitor or Jag-1 peptide before 5-FU treatment. The expression changes of ABCG2, CK19, and PCNA were examined by Western blot or immunofluorescence and the morphologic changes were observed by haematoxylin and eosin stain during the recovery process. Results:, Expression levels of Notch3, Jagged1, and Hey1 were increased in rat tracheal epithelial cells after treatment with 5-FU. During injury recovery, disruption of Notch signalling by treatment with the ,-secretase inhibitor reduced expression of ABCG2 and PCNA, but promoted expression of CK19, while persistent activation of Notch signalling promoted expression of ABCG2 and PCNA, but reduced expression of CK19. Under both conditions, recovery from injury was reduced. However, blocking Notch signalling prior to 5-FU treatment led to the complete blockage of recovery, while activating Notch signalling before 5-FU treatment promoted recovery. Conclusions:, During tracheal epithelial regeneration, Notch signalling maintains an undifferentiated state and promotes proliferation among a population of tracheal epithelial cells. [source] Co-production of vascular endothelial cadherin and inducible nitric oxide synthase by endothelial cells in periapical granulomaINTERNATIONAL ENDODONTIC JOURNAL, Issue 3 2006S. Hama Abstract Aim, To clarify the mechanisms of inflammatory cell migration in human periapical granulomas by examining vascular endothelial (VE) cadherin and inducible nitric oxide synthase (iNOS)-producing cells. Methodology, Periapical tissues were obtained from patients during endodontic surgery and were divided into two portions. After fixing the tissues with acetone or 4% paraformaldehyde in phosphate-buffered saline, 5- ,m-thick paraffin or cryostat sections were prepared, respectively. The paraffin sections of the inflamed tissues were evaluated histologically with haematoxylin,eosin stains. Cryostat sections of the tissue, diagnosed as periapical granulomas, were then examined by either immunohistochemistry using anti-human VE-cadherin or iNOS antibodies (Abs) for the characterization of infiltrating cells. In addition, co-localization of VE-cadherin and iNOS production was also analysed by two-colour immunofluorescence image analysis. Results, Endothelial cells were strongly stained with iNOS Abs. Macrophages, lymphocytes, polymorphonuclear leucocytes and fibroblasts also exhibited iNOS production. These iNOS-positive cells accumulated around the blood vessels. On the other hand, VE-cadherin production was exhibited in only endothelial cells. Two-colour immunofluorescence image analysis using VE-cadherin and iNOS Abs demonstrated that iNOS-producing endothelial cells also showed VE-cadherin production. Conclusions, Vascular endothelial-cadherin produced by endothelial cells could be regulated by iNOS-producing cells in periapical granulomas and might play a pivotal role in vascular permeability. [source] Lymphatic mapping and sentinel lymph node biopsy in the detection of early metastasis from sweat gland carcinoma,CANCER, Issue 9 2003Paul N. Bogner M.D. Abstract BACKGROUND Several subtypes of sweat gland carcinoma have been found to demonstrate a propensity to metastasize systemically and to regional lymph nodes. The predictive value and benefit of sentinel lymph node (SLN) biopsy have been established in numerous other malignancies, but to the authors' knowledge there is little literature published to date regarding the use of SLN biopsy in patients with sweat gland carcinoma. In the current study, the authors demonstrated the utility of SLN biopsy in detecting subclinical metastases of sweat gland carcinoma, which may result in early treatment. METHODS The authors identified five patients with malignant eccrine tumors in whom SLN biopsy was performed at the study institution. Clinical and histopathologic data were reviewed. RESULTS The five study cases included two cases of aggressive digital papillary adenocarcinoma (both occurring on upper extremity digits), two cases of hidradenocarcinoma (occurring on the knee and foot, respectively), and an eccrine carcinoma (occurring on the scalp). In each biopsy-established case, there was no clinical evidence of metastatic disease, and a wide local excision or amputation was performed with concurrent SLN biopsy. Four of 18 SLNs in 3 of the 5 patients (60%) were found to be positive for metastatic carcinoma, as identified in hematoxylin and eosin stains and/or cytokeratin immunohistochemical stains. All three lymph node-positive patients subsequently underwent regional lymphadenectomy and were found to have no evidence of additional metastases. CONCLUSIONS The results of the current study demonstrate that SLN biopsy detects subclinical metastases from sweat gland carcinomas to regional lymph nodes. SLN mapping and biopsy at the time of resection can provide useful information with which to guide early treatment. Further studies are necessary to determine whether this procedure results in a survival benefit in patients with sweat gland carcinomas. Cancer 2003;97:2285,9. © 2003 American Cancer Society. DOI 10.1002/cncr.11328 [source] | ||||||||||