RESUMO
Primary retroperitoneal mucinous neoplasms are extremely rare tumors. Less than sixty cases have been reported in international literature until date, with striking female predominance. We report a case of primary mucinous cystadenocarcinoma of the retroperitoneum in a 51‑year‑old male presenting with nonspecific abdominal complaints. This case is being highlighted for its rare occurrence in a male patient.
RESUMO
We present a rare case of clear cell adenocarcinoma of the male bulbomembranous urethra. Mostly these tumors have been described in the female urethral tract with its possible origin from mullerian remnants, wolffian remnants or paraurethral glands. Histologically, these tumors have typically tubulocystic pattern comprising of hobnailed cells with clear glycogenated cytoplasm along with well-defined cytoplasmic membranes. This case is being presented due to its rarity, aggressive behavior and to discuss, trauma as its possible etiological factor
Assuntos
Adenocarcinoma de Células Claras/diagnóstico , Adenocarcinoma de Células Claras/patologia , Adenocarcinoma de Células Claras/cirurgia , Histocitoquímica , Humanos , Imageamento por Ressonância Magnética , Masculino , Microscopia , Pessoa de Meia-Idade , Pênis/patologia , Pênis/diagnóstico por imagem , Neoplasias Uretrais/diagnóstico , Neoplasias Uretrais/patologia , Neoplasias Uretrais/cirurgiaRESUMO
We report a case of a 47-year-old female (posthysterectomy) with bleeding per vaginam. Imaging studies showed a large abdomino-pelvic mass diagnosed as extrauterine adenomyoma with uterus-like features. This pathological entity is extremely uncommon with only few case reports available in the reported literature. This case is being highlighted for its rarity and to discuss the possible theories for origin of this uncommon condition.
Assuntos
Adenomioma/diagnóstico , Adenomioma/patologia , Feminino , Hemorragia/patologia , Histocitoquímica , Humanos , Histerectomia , Microscopia , Pessoa de Meia-Idade , Pelve/diagnóstico por imagem , Radiografia Abdominal , Tomografia Computadorizada por Raios X , Neoplasias Uterinas/diagnóstico , Neoplasias Uterinas/patologia , Útero/patologia , Vagina/patologiaRESUMO
We report a case of 50-year-old male with obstructive jaundice diagnosed as peri-ampullary collision tumor comprising of large cell neuroendocrine carcinoma and signet ring cell carcinoma. The association of neuroendocrine (usually carcinoids) and adenocarcinoma is extremely uncommon with only few case reports available in the reported literature.
Assuntos
Carcinoma Neuroendócrino/complicações , Carcinoma Neuroendócrino/diagnóstico , Carcinoma Neuroendócrino/patologia , Carcinoma de Células em Anel de Sinete/complicações , Carcinoma de Células em Anel de Sinete/diagnóstico , Carcinoma de Células em Anel de Sinete/patologia , Neoplasias do Ducto Colédoco/diagnóstico , Neoplasias do Ducto Colédoco/patologia , Histocitoquímica , Proteínas de Homeodomínio/análise , Humanos , Imuno-Histoquímica , Imageamento por Ressonância Magnética , Masculino , Microscopia , Pessoa de Meia-Idade , Radiografia Abdominal , Sinaptofisina/análise , Transativadores/análiseAssuntos
Adenocarcinoma/diagnóstico , Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Histocitoquímica , Humanos , Imuno-Histoquímica , Masculino , Neoplasias do Mediastino/diagnóstico , Neoplasias do Mediastino/patologia , Neoplasias do Mediastino/cirurgia , Microscopia , Teratoma/complicações , Teratoma/diagnóstico , Teratoma/patologia , Teratoma/cirurgia , Adulto JovemRESUMO
Adenomyoepithelioma of the breast is a rare tumor. Malignant change arising in this lesion is infrequent and only a few cases have been reported. We discuss a case of a 56-year-old female presenting with a firm breast mass, which was interpreted as myoepithelial carcinoma arising in a background of adenomyoepithelioma, based on morphological and immunohistochemical studies. This case is being highlighted for its rarity and distinct morphological spectrum.
RESUMO
Persistent Müllerian duct syndrome (PMDS) is a rare form of male pseudohermaphroditism characterized by the presence of the Mόllerian duct structures in an otherwise phenotypically as well as genotypically normal male. We report a case of 40-year-old cryptorchid male who was clinically diagnosed as seminoma in the undescended abdominal testis. A diagnosis of PMDS was made on histological evaluation subsequent to abdominal orchidectomy.
RESUMO
The specialized mesenchyme of the breast is the seat of neoplasms with distinct morphology, though with considerable overlap due to the ever increasing number of variants. This article seeks to describe the morphologic features of one such rare neoplasm. A 35-year-old female patient presented with a breast lump that was subsequently excised. Morphological assessment and immunohistochemistry were performed and a diagnosis of periductal stromal sarcoma with lipoblast-like cells (pseudolipoblasts), was made. Being an unusual finding in a rare entity of intermediate grade, it has to be considered, before rendering a diagnosis of a malignant, higher-grade neoplasm.