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2.
Dermatol Online J ; 26(5)2020 May 15.
Article in English | MEDLINE | ID: mdl-32621713

ABSTRACT

Acral purpura is generally a hallmark for severe internal disease. However, exogenous pigmentation related to contact with invertebrates, can induce acral purpura-like lesions. Data regarding the beetle's ability to cause skin hyperpigmentation or purpura-like lesions are scarce. We report a case of exogenous pigmentation caused by accidental contact with a darkling beetle, clinically simulating acral purpuric lesions. The history of recent drug inhalation and abnormal autoimmunity tests made this diagnosis difficult.


Subject(s)
Coleoptera , Hyperpigmentation/etiology , Toes/pathology , Animals , Diagnosis, Differential , Humans , Male , Middle Aged
3.
Rev. esp. cir. oral maxilofac ; 39(4): 221-228, oct.-dic. 2017. tab, ilus
Article in Spanish | IBECS | ID: ibc-166797

ABSTRACT

Introducción. El carcinoma análogo secretor de mama (MASC) es un tumor de glándula salival de reciente aparición con pocos casos descritos. Tiene un diagnóstico preoperatorio difícil y su tratamiento y seguimiento todavía siguen en estudio. Material y métodos. Revisión sistemática de 367 tumores parotídeos intervenidos entre enero de 2011 y diciembre de 2015 en el Hospital Universitario Miguel Servet. De los 367 casos operados, 45 eran malignos, y de estos, encontramos 2 únicos casos de MASC. Resultados. Cuarenta y cinco de los 367 tumores parotídeos eran malignos, siendo 2 de ellos MASC. La parotidectomía subtotal y superficial asociada a la radioterapia ha sido el tratamiento de elección. Tras 12 y 18 meses, no se han evidenciado recidivas. Discusión. Revisión de los estudios publicados en la literatura sobre su diagnóstico diferencial con otros tumores de glándula salival y su tratamiento, teniendo en cuenta los resultados citológicos e inmunohistoquímicos de cada uno de ellos, y destacando cuáles son los marcadores más específicos para el diagnóstico de MASC. Conclusión. El diagnóstico preoperatorio de este tumor casi nunca es acertado, y todavía no se conoce su tratamiento y supervivencia a largo plazo, por lo que más estudios prospectivos y nuevos casos deben ser documentados y seguidos (AU)


Introduction. Mammary analogue secretory carcinoma (MASC) is a new salivary gland tumour with few cases reported. Pre-operative diagnosis is difficult, and treatment and follow-up are still under study. Material and method. A systematic review was conducted on 367 parotid tumours treated between January 2011 and December 2015 at the University Hospital Miguel Servet, Spain. Of the 367 cases operated on, 45 were malignant, and of these, only two cases were MASC. Results. Of the 367 parotid tumours reviewed, 45 were malignant, and two of them MASC. Sub-total and superficial parotidectomy combined with radiation therapy has been the treatment of choice. They showed no recurrence after 12 and 18 months. Discussion. A review is presented on the studies published in the literature on the differential diagnosis with other salivary gland tumours, taking into account their cytological and immunohistochemical results, focussing on the most specific markers for the diagnosis of MASC. Conclusion. Pre-operative diagnosis of MASC is rarely successful. Its treatment and long-term survival is largely unknown, thus there is a need for more prospective studies, as well as new cases that should be documented and followed-up (AU)


Subject(s)
Humans , Female , Middle Aged , Aged, 80 and over , Mammary Analogue Secretory Carcinoma/complications , Mammary Analogue Secretory Carcinoma/diagnosis , Mammary Analogue Secretory Carcinoma/therapy , Salivary Gland Neoplasms/complications , Parotid Gland/pathology , Parotid Gland/radiation effects , Parotid Gland/surgery , Parotid Neoplasms/radiotherapy , Diagnosis, Differential , Retrospective Studies
4.
Am J Dermatopathol ; 39(6): 468-470, 2017 Jun.
Article in English | MEDLINE | ID: mdl-28525424

ABSTRACT

Papillary and pseudopapillary features are histopathologic findings typically associated with carcinomas (thyroid, pancreas, breast, prostate, bladder, kidney, or ovary) or mesothelioma. Melanoma is typically composed of nested and variably pigmented atypical cells. Here, we report a case of in-transit metastasis of melanoma presenting with prominent papillary features, and we discuss the differential diagnoses of neoplasms with papillary features. This case report suggests that the spectrum of neoplasms with papillary features should be expanded to include melanoma, a pattern that, to the best of our knowledge, is uncommon.


Subject(s)
Head and Neck Neoplasms/pathology , Melanoma/secondary , Scalp/pathology , Skin Neoplasms/pathology , Aged , Biomarkers, Tumor/analysis , Biopsy , Diagnosis, Differential , Head and Neck Neoplasms/chemistry , Head and Neck Neoplasms/surgery , Humans , Immunohistochemistry , Male , Melanoma/chemistry , Melanoma/surgery , Predictive Value of Tests , Scalp/chemistry , Scalp/surgery , Skin Neoplasms/chemistry , Skin Neoplasms/surgery , Treatment Outcome
5.
Rev. chil. cir ; 68(5): 376-378, oct. 2016. ilus
Article in Spanish | LILACS | ID: lil-797348

ABSTRACT

Objetivo: Reportar casos de linfadenoma sebáceo, un tumor raro, localizado principalmente en la glándula parótida, con muy pocos casos descritos en la literatura. Casos clínicos: Presentamos 2 casos de esta rara afección, tratados en el Hospital Universitario Miguel Servet de Zaragoza, de enero de 2010 a diciembre de 2014. El diagnóstico, tanto por imagen como citológico, es difícil debido a su baja prevalencia y a la gran variedad de tumores de glándula parótida que existen. En los 2 casos presentados ha sido necesaria la exéresis para llegar al diagnóstico. El tratamiento curativo consiste en la exéresis completa de la tumoración.


Aim: To report a rare parotid tumour: sebaceous lymphadenoma, with very few cases reported in the literature. Cases report: We present 2 cases of lymphadenoma sebaceous of the parotid gland treated by surgery at University Hospital Miguel Servet of Zaragoza between January 2010 and December 2014. The diagnosis, both radiological and cytological, is difficult because of their low prevalence and the great variety of parotid gland tumors existent. In our 2 cases described, excision has been required for diagnosis. A complete excision of the tumor is required for curative treatment.


Subject(s)
Humans , Aged , Aged, 80 and over , Parotid Gland/pathology , Parotid Neoplasms/surgery , Adenolymphoma/surgery , Parotid Gland/surgery , Parotid Neoplasms/diagnosis , Adenolymphoma/diagnosis , Retrospective Studies
6.
Rev. esp. patol ; 49(2): 129-134, abr.-jun. 2016. ilus
Article in Spanish | IBECS | ID: ibc-152447

ABSTRACT

El sarcoma sinovial (SS) renal fue descrito por primera vez por Argani et al. en el año 2000. Presentamos un caso de SS renal monofásico de grado intermedio. Se trata de un varón de 42 años que presentaba un tumor renal sólido-quístico de 6 cm bien delimitado, con un nódulo sólido de 1,5 cm. Se realizó nefrectomía parcial. El tumor se caracterizaba por células fusiformes monomorfas y quistes revestidos por células epiteliales en tachuela. Se observó infiltración focal de la grasa perirrenal que rodeaba el nódulo sólido. Las células fusocelulares expresaban CD99, BCL2, EMA y SMA, y eran negativas para S-100, CD34, receptores de estrógenos y progesterona, desmina y WT1. Las células en tachuela expresaban CD10, PAX8, PAX2, EMA, CKAE1-AE3, CK7 y CK19, confirmando que eran epitelio renal atrapado. Se realizó FISH que demostró la translocación t(X;18), específica del SS. El paciente ha recibido 4 ciclos de quimioterapia adyuvante y continúa libre de recurrencia o metástasis 9 meses tras la intervención (AU)


Synovial sarcoma (SS) of the kidney was first reported by Argani et al. in 2000. We report a case of a renal monophasic SS of intermediate grade in 42-year-old man with a solid-cystic, well-circumscribed, 6 cm renal mass containing a solid nodule of 1.5 cm. Partial nephrectomy was performed. The tumour was characterized by monomorphic spindle cells and cysts lined by trapped «hobnail» epithelial cells. Sections showed focal infiltration of perinephric fat surrounding the solid nodule. Spindle cells expressed CD99, BCL2, EMA and SMA and were negative for S-100, CD34, oestrogen and progesterone receptors, desmin and WT1. The 'hobnail epithelium' expressed CD10, PAX8, PAX2, EMA, CKAE1-AE3, CK7 and CK19, confirming its non-neoplastic and renal identity. FISH was performed and t(X;18) translocation, specific of SS, was demonstrated. The patient received 4 cycles of adjuvant chemotherapy and is alive without evidence of disease 9 months after surgery (AU)


Subject(s)
Humans , Male , Adult , Sarcoma, Synovial/diagnosis , Sarcoma, Synovial/pathology , Kidney Neoplasms/diagnosis , Kidney Neoplasms/history , Kidney Neoplasms/pathology , Molecular Biology/methods , Tomography, Emission-Computed/instrumentation , Multicystic Dysplastic Kidney/pathology , Chemotherapy, Adjuvant , Ifosfamide/therapeutic use , Doxorubicin/therapeutic use
7.
Rev. esp. patol ; 47(1): 41-44, ene.-mar. 2014. ilus, tab
Article in Spanish | IBECS | ID: ibc-119951

ABSTRACT

El tumor desmoplásico de células pequeñas y redondas es un tumor agresivo poco frecuente que surge generalmente en el peritoneo abdominal o pélvico. Afecta sobre todo a varones jóvenes y se caracteriza por la presencia de células pequeñas e indiferenciadas con núcleos hipercromáticos. Su principal característica diagnóstica es la co-expresión de marcadores epiteliales, musculares y neuronales, así como la presencia de la translocación recíproca t (11; 22)(p13; q12), que afecta a los genes EWS y WT1. Presentamos un caso de localización y clínica atípicas, con un perfil inmunohistoquímico peculiar y cuyo diagnóstico pudo ser filiado de forma concluyente tras realizar el estudio molecular. Se trata de una niña de 7 años con un tumor localizado en la pared torácica. Tras la cirugía se inicia tratamiento con quimioterapia. La paciente continúa viva a los 7 meses de la intervención (AU)


Desmoplastic small round cell tumour is a rare, aggressive neoplasm usually found in young males in the abdominal or pelvic peritoneum. It is characterized by the presence of small undifferentiated cells with hyperchromatic nuclei. Its main diagnostic feature is the co-expression of epithelial, muscular and neural markers in addition to the reciprocal translocation t (11; 22)(p13; q12), which affects the WT1 and EWS gene. We present a case of a 7 year old girl with a tumour in the thoracic wall. The unusual location, together with an atypical IHC profile meant that diagnosis was only possible after molecular studies. The patient underwent postoperative chemotherapy and is alive and well 7 months after surgery (AU)


Subject(s)
Humans , Female , Child , Desmoplastic Small Round Cell Tumor/pathology , Thoracic Neoplasms/pathology , Thoracic Wall/pathology , Translocation, Genetic/genetics
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