J L Rodríguez Peralto

Hospital Universitario 12 de Octubre, Madrid, Madrid, Spain

Are you J L Rodríguez Peralto?

Claim your profile

Publications (28)46.53 Total impact

  • Source
    [show abstract] [hide abstract]
    ABSTRACT: Several isolated markers have been proposed to aid in differential diagnostic of difficult melanocytic lesions, albeit none has been shown to be definitive in differentiating Spitz nevus from melanoma. This study proposes a wide panel of 22 markers having important functions in different biological functions (cell cycle, apoptosis, DNA repair proteins and membranous receptors) to provide a combination of proteins associated with either benign or malignant phenotype. Using tissue microarrays, we compared protein expression profiles in 28 typical Spitz nevi and 62 primary vertical growth phase non-spitzoid melanomas. Most of the significant differences were linked to cell-cycle deregulation such as overexpression of cyclin D1 and p21 in Spitz nevi compared with non-spitzoid melanomas (74 vs 16% and 91 vs 27%, respectively) and mitotic rate including Ki-67, highly expressed in deep areas of non-spitzoid melanomas (37%), whereas it is not expressed in Spitz nevi (0%), topoisomerase IIalpha (79% in non-spitzoid melanomas vs 15% in Spitz nevi) and nuclear survivin (69% in melanomas vs 0% in Spitz nevi). A combination of biological markers differentially expressed in Spitz nevi from non-spitzoid melanomas is defined, thus providing a potential tool for histopathological differential diagnostic between Spitz nevus and melanoma. Nevertheless, more studies including atypical Spitz nevi and spitzoid melanomas are necessary to further establish a reliable panel to differentiate among difficult cases.
    Modern Pathology 09/2010; 23(9):1215-24. · 5.25 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: Cribriform carcinoma is the histopathologic variant of cutaneous apocrine carcinoma characterized by interconnected solid aggregations of neoplastic cells that are punctuated by small round spaces. To describe the histopathologic and immunohistochemical characteristics of this under-recognized cutaneous adnexal neoplasm. Twenty-six cases of primary cutaneous cribriform apocrine carcinoma were clinically, histopathologically, and immunohistochemically studied. Seven neoplasms arose in males and 19 in females. The median age of the patients was 47.8 years. The lower and upper limbs were the most frequent sites. Histopathologically, the neoplasms consisted of well-circumscribed dermal nodules composed of multiple, interconnected, solid aggregations of basophilic epithelial cells that were punctuated by small round spaces. Immunohistochemically, the neoplastic cells expressed immunoreactivity for MNF116, AE1/AE3, Cam 5.2, cytokeratin 7, carcinoembryonic antigen, and epithelial membrane antigen. All specimens came from dermatopathology laboratories, and some inherent selection bias may exist. Primary cutaneous cribriform apocrine carcinoma is a distinctive but little-known variant of cutaneous apocrine carcinoma.
    Journal of the American Academy of Dermatology 10/2009; 61(4):644-51. · 4.91 Impact Factor
  • Maria C Garrido-Ruiz, Paloma Ramos, Ana B Enguita, José L Rodriguez Peralto
    [show abstract] [hide abstract]
    ABSTRACT: Benign fibrous histiocytoma is one of the most frequent benign neoplasms mainly composed of a mixture of fibroblastic and histiocytic cells, especially found in the skin (dermatofibroma), particularly in the limbs. The diagnosis of cutaneous benign fibrous histiocytoma is generally easy; however, rare variants may be difficult to identify, and the diagnosis only confirmed after exhaustive histopathological examination. Thus, deep subcutaneous dermatofibroma may be difficult to distinguish from dermatofibrosarcoma protuberans and dermatofibroma with monster giant cells from malignant fibrous histiocytoma and atypical fibroxanthoma. We report a case of a 38-year-old woman with a painless swelling on the abdominal wall, which was totally excised and histopathologically diagnosed as subcutaneous atypical fibrous histiocytoma. The lesion was deeply located within the subcutaneous tissue and consisted of interlacing fascicles of predominant histiocyte-like spindle cells intermingled with pleomorphic giant cells with bizarre large nuclei (bilobed and multilobed) and prominent eosinophilic nucleoli. Only 1 mitotic figure was found in the whole lesion. Prominent hyaline collagen bundles surrounded by tumor cells were observed, predominantly at the periphery of the lesion. Immunohistochemical study showed positivity only for vimentin and factor XIIIa, whereas pan-keratins, actin, desmin, CD34, CD10, and S-100 protein were negative. Recognition of dermatofibroma is important, allowing sequential excision and optimal results. Definitive diagnosis, although especially difficult in our case, is established by characteristic histological and immunohistochemical criteria. To the best of our knowledge, we report the first case of subcutaneous fibrous histiocytoma with monster cells.
    The American Journal of dermatopathology 08/2009; 31(5):499-501. · 1.30 Impact Factor
  • M C Garrido-Ruiz, R Carrillo, A B Enguita, José L Rodriguez Peralto
    [show abstract] [hide abstract]
    ABSTRACT: Dermatofibroma or cutaneous fibrous histiocytoma is a common benign skin lesion with multiple, distinct histologic variants, including cellular, aneurismal, epithelioid, atypical, lipidized "ankle-type," palisading, and cholesterotic. Although dermatofibromas are considered benign neoplasms, certain variants including cellular and aneurismal ones have shown to have a notable tendency to locally recur after excision. Indeed, although extremely rarely, metastases have been associated with the cellular and aneurysmal/atypical variants. Signet-ring cells are formed by cytoplasmic accumulations of various substances that push the nucleus toward the cellular border. The finding of signet-ring cells in a skin neoplasm always raises the suspicion of metastatic adenocarcinoma, although a number of reports have shown their occurrence in primitive cutaneous neoplasms as well. Signet-ring cell formation, however, has never been described in dermatofibroma. We present, for the first time, a new, distinctive variant of dermatofibroma, so-called signet-ring cell dermatofibroma, in a 16-year-old man with a slowly growing skin tumor on the lateral side of his right leg. Histologic examination demonstrated a striking signet-ring cell appearance of most of the cells in an otherwise fibrohistiocytic looking proliferation. Histochemical and immunohistochemical stainings confirmed the diagnosis of dermatofibroma. The phenomenon described in this case enlarges the histologic spectrum of cutaneous fibrous histiocytoma and may cause substantial differential diagnostic problems.
    The American Journal of dermatopathology 03/2009; 31(1):84-7. · 1.30 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: Syringomas are benign, eccrine, sweat gland tumors that clinically appear as small skin-colored or yellow papules. Eruptive syringomas are rare variants that typically develop on the body's cutaneous anterior surface. Syringomas on the genital area have rarely been reported, although several authors maintain that syringoma should be considered in the differential diagnosis of pubic pruritic papular dermatitis. We present a case of a 31-year-old man with multiple, eruptive, asymptomatic papules involving the pubic area developed after waxing of the zone. Histological examination revealed disseminated syringomata. We postulate that the lesions were induced by depilation with a subsequently reactive inflammatory process resulting in a hyperplastic reaction of the eccrine ducts. This case supports the previous hypothesis suggesting that some of the so-called "eruptive syringomas" may start as a primary inflammatory eccrine reaction.
    The American Journal of dermatopathology 08/2008; 30(4):377-80. · 1.30 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: Sarcoidosis is a chronic multisystemic granulomatous disease of unknown etiology, characterized by the formation of noncaseating granulomas in the involved organs. Cutaneous involvement is about 25% with different clinical expressions, the lichenoid pattern being one of the rarest types of cutaneous sarcoidosis. Lichenoid sarcoidosis clinically manifests with multiple scale papules involving extensive skin areas, especially the trunk, limbs, and face mimicking a lichen planus. Although diverse histologic patterns have been previously related, a lichenoid granulomatous infiltrate involving the dermo-epidermal junction has never been reported in lichenoid sarcoidosis. We report a case of a 43-year-old woman presenting with skin-colored pruritic papules, slightly scaling in trunk, extremities, and ears. These symptoms condition continued to expand and worsen for several years. The patient was otherwise in good health with no lymphadenopathies. Histopathologic examination of a skin biopsy showed an upper dermal granulomatous infiltrate of epithelioid cells, without necrosis, distributed in a lichenoid pattern with many cytoid bodies. We consider this may be the first case presenting a characteristic microscopic granulomatous lichen-like pattern in the setting of a clinically lichenoid type of sarcoidosis.
    The American Journal of dermatopathology 07/2008; 30(3):271-3. · 1.30 Impact Factor
  • Dermatologic Surgery 09/2007; 33(8):994-6. · 1.87 Impact Factor
  • Piel 01/2007; 22(9):427-428.
  • [show abstract] [hide abstract]
    ABSTRACT: We report a 84-year-old man with a 13-year history of recurrent generalized asymptomatic pustular lesions. Histology revealed areas of necrobiosis surrounded by palisading granulomas and transepidermal and follicular elimination of the necrobiotic material. A dense infiltrate of neutrophils was also found. Although 26% of patients with generalized perforating granuloma annulare have some yellow pustule-like papules, these correspond histologically to the yellow viscous necrobiotic material extruding through the epidermis and not to a real neutrophilic infiltrate. This is the first case report of perforating granuloma annulare with recurrent generalized pustular lesions with a dense infiltrate of neutrophils.
    British Journal of Dermatology 11/2003; 149(4):866-8. · 3.76 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: We report a 84-year-old man with a 13-year history of recurrent generalized asymptomatic pustular lesions. Histology revealed areas of necrobiosis surrounded by palisading granulomas and transepidermal and follicular elimination of the necrobiotic material. A dense infiltrate of neutrophils was also found. Although 26% of patients with generalized perforating granuloma annulare have some yellow pustule-like papules, these correspond histologically to the yellow viscous necrobiotic material extruding through the epidermis and not to a real neutrophilic infiltrate. This is the first case report of perforating granuloma annulare with recurrent generalized pustular lesions with a dense infiltrate of neutrophils.
    British Journal of Dermatology 09/2003; 149(4):866 - 868. · 3.76 Impact Factor
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: Mycosis fungoides (MF) is the most frequent type of cutaneous T-cell lymphoma, whose diagnosis and study is hampered by its morphologic similarity to inflammatory dermatoses (ID) and the low proportion of tumoral cells, which often account for only 5% to 10% of the total tissue cells. cDNA microarray studies using the CNIO OncoChip of 29 MF and 11 ID cases revealed a signature of 27 genes implicated in the tumorigenesis of MF, including tumor necrosis factor receptor (TNFR)-dependent apoptosis regulators, STAT4, CD40L, and other oncogenes and apoptosis inhibitors. Subsequently a 6-gene prediction model was constructed that is capable of distinguishing MF and ID cases with unprecedented accuracy. This model correctly predicted the class of 97% of cases in a blind test validation using 24 MF patients with low clinical stages. Unsupervised hierarchic clustering has revealed 2 major subclasses of MF, one of which tends to include more aggressive-type MF cases including tumoral MF forms. Furthermore, signatures associated with abnormal immunophenotype (11 genes) and tumor stage disease (5 genes) were identified.
    Blood 09/2003; 102(3):1042-50. · 9.06 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: The term ectodermal dysplasias includes many disorders that share some clinical features such as involvement of one or several ectodermal structures and congenital origin. Currently, 154 different types divided into 11 clinical subgroups (Freire Maia classification 1994) have been described. The most frequent entity is hypo- or anhidrotic ectodermal dysplasia (Christ-Siemens-Touraine syndrome). This is a rare hereditary disease whose main characteristic is the absence, or more often the reduction, of sweat glands, leading to an increase in body temperature together with anomalies of the epidermis and its appendages (hair and nails). We present a case of hypohidrotic ectodermal dysplasia in a premature 18-month-old boy who was referred to our department because of markedly dry skin since birth and recurrent eczematous and lichenification lesions that had been successfully treated with topical corticosteroids. Physical examination revealed mild alopecia with sparse and fine blonde hair and the absence of dental alveoli. The boy's mother had noticed slight sweating and episodes of fever without clinical symptoms, which were more frequent in summer. Hypohidrotic ectodermal dysplasia should be included in the differential diagnosis of fever of unknown origin.
    Anales espanoles de pediatria 04/2002; 56(3):253-7.
  • [show abstract] [hide abstract]
    ABSTRACT: —Presentamos cinco pacientes (tres mujeres y dos varones) que consultaron por reacciones al color rojo de los tatuajes. Todos ellos referían prurito y elevación de las zonas coloreadas en rojo que había comenzado entre varios días y 4 años después de la realización de los mismos. Se tomaron biopsias de las lesiones, que mostraron un patrón liquenoide en tres de ellos, una dermatitis espongiótica en otro y una hiperplasia pseudoepiteliomatosa en el último. A tres se les realizaron pruebas epicutáneas, encontrándose únicamente una positividad a la tinta aportada por uno de ellos, sin otras positividades en la batería estándar y de colorantes textiles. Venticinco controles con dicha tinta fueron negativos. Nuestros casos concuerdan con la literatura, en la que se describen distintas reacciones al color rojo de los tatuajes, todas ellas con una clínica muy similar, siendo el patrón histológico variable, en la mayoría de los casos de tipo liquenoide. Las pruebas epicutáneas tienen muy baja sensibilidad y no se ha podido establecer una relación causal con ningún elemento químico.
    Actas Dermo-Sifiliográficas 10/2001; 92(s 7–8):337–341.
  • [show abstract] [hide abstract]
    ABSTRACT: —La papulosis linfomatoide (PL) es un linfoma cutáneo de células T de bajo grado; consiste en una erupción crónica, recurrente y autolimitada de pápulas y pequeños nódulos. Las lesiones predominan en tronco y región proximal de extremidades, pudiendo aparecer en distinto estadio evolutivo simultáneamente. Esta enfermedad afecta principalmente a adultos jóvenes, siendo muy rara en niños. Presentamos un caso de una niña de 23 meses de edad que tras un período de seguimiento de 10 meses presentó dos brotes de lesiones papulonodulares ulceradas, de predominio en tronco y miembros, que remitieron tras aplicación de un corticosteroide tópico. El estudio histopatológico reveló un linfoma T CD30 positivo, compatible con PL tipo A, siendo el reordenamiento de genes del receptor de células T policlonal, tanto en piel como en sangre periférica. Aunque la PL está bien descrita en adultos, el curso clínico, pronóstico, riesgo de linfoma y recomendaciones de seguimiento no han sido establecidas en niños. Las terapéuticas empleadas en adultos no suelen ser bien toleradas en pacientes pediátricos; además, como el tratamiento no modifica el riesgo de malignidad, estos niños requieren un seguimiento continuo a lo largo de su vida por el riesgo permanente de desarrollar otro tipo de linfoma.
    Actas Dermo-Sifiliográficas 10/2001; 92(s 7–8):349–353.
  • Anales espanoles de pediatria 03/1999; 50(2):185-6.
  • [show abstract] [hide abstract]
    ABSTRACT: Aggressive fibromatosis is a rare illness in children. We analyzed the records of four patients, taken from a total of 505, all of which had different types of tumours, over a period of ten years. In the four cases, three were male and one female. Their ages ranged from 0-7 years old. We also did a review of this pathology. The illness may present itself a a painless mass found particularly in the pelvic area, knee, buttock and anterior mediastinum, respectively. Two of these cases presented lysis of osseous tissue shown in radiologic assays. The diagnosis was histological in every case. The only treatment was surgical in all of them. Two of the cases required only one intervention to achieve remission and up to now there has been no record of further illness. At the time of writing this paper the patients are alive after a follow-up period of thirty months. Up to now, no other alternative forms of treatment have been convincing. Adjuvant radiation and chemotherapy are probably beneficial, but the precise indication for its use is not well defined.
    Anales espanoles de pediatria 08/1998; 49(1):23-6.
  • Anales espanoles de pediatria 01/1998; 48(1):65-7.
  • Archives of Dermatology 05/1997; 133(4):499-500, 502-3. · 4.79 Impact Factor
  • International Journal of Dermatology 09/1996; 35(8):581-2. · 1.34 Impact Factor
  • Anales espanoles de pediatria 05/1992; 36(4):314-6.