[Bilateral synchronous anaplastic variant spermatocytic tumor: Report of a rare neoplasm]. / Tumor espermatocítico variante anaplásica sincrónico bilateral: reporte de una neoplasia infrecuente.

Spermatocytic tumor is a very rare germ cell testicular neoplasm that accounts for less than 1% of testicular cancers. It generally affects older men with a mean age of 53.6 years (range 19-92 years). Spermatocytic tumor is classified within the group of germ cell tumors not related to germ cell neoplasia in situ. It presents clinicopathological characteristics different from classic seminoma and is not considered a variant of the latter. Due to a morphologic overlap with classical seminoma, it was called "sperm cell seminoma" in the past. The anaplastic variant of spermatocytic tumor is exceptional, few cases have been described in the literature, it presents an earlier onset compared to spermatocytic tumor and a benign behavior despite showing histological patterns similar to classic seminoma. We present the second case of bilateral synchronous anaplastic spermatocytic tumor, in a young patient treated with orchiectomy and chemotherapy.

Cistoadenofibroma seroso de ovario: experiencia de 12 años en el Hospital General Universitario de Albacete / Ovarian serous cystadenofibroma: 12-year experience at the Hospital General Universitario de Albacete

ANTECEDENTES: El cistoadenofibroma seroso de ovario es una neoplasia epitelial benigna, relativamente infrecuente, de crecimiento lento y de causa desconocida. El diagnóstico preoperatorio es complejo debido a la ausencia de síntomas y signos específicos que permitan descartar la malignidad. OBJETIVO: Analizar retrospectivamente las características clínicas, radiológicas, histopatológicas, y la atención médica de las pacientes. MATERIALES Y MÉTODOS: Análisis retrospectivo y descriptivo de pacientes con diagnóstico histopatológico de cistoadenofibroma seroso de ovario atendidas en el Hospital General de Albacete entre los años 2010 a 2022. RESULTADOS: Se analizaron 635 piezas quirúrgicas, de las que el 57.74% correspondieron a neoplasias serosas benignas, el 17.41% a neoplasias serosas fronterizas y un 24.85% a neoplasias serosas malignas. Se identificaron 20 casos de pacientes con diagnóstico de cistoadenofibroma seroso de ovario. La edad media de esas pacientes fue de 47 años, con límites de 9 y 74 años. Un caso se asoció con un tumor proliferativo seroso atípico contralateral. El tratamiento fue quirúrgico y no se identificaron recurrencias en ninguno de los casos. CONCLUSIONES: El cistoadenofibroma seroso suele manifestarse como un quiste ovárico complejo, con componentes sólidos-quísticos y tabiques irregulares; por esto a menudo se diagnostica erróneamente como tumor maligno antes de la intervención. La biopsia por congelación ayuda a confirmar su naturaleza benigna y evita una cirugía extensa innecesaria. El tratamiento consiste, principalmente, en la extirpación quirúrgica del quiste con o sin ooforectomía. El pronóstico suele ser excelente.

Abstract BACKGROUND: Serous ovarian cystoadenofibroma is a relatively rare, slow-growing, benign epithelial neoplasm of unknown cause. Preoperative diagnosis is complex due to the absence of specific symptoms and signs to rule out malignancy. OBJECTIVE: To retrospectively analyze the clinical, radiologic, histopathologic features, and medical care of the patients. MATERIALS AND METHODS: Retrospective and descriptive analysis of patients with histopathological diagnosis of ovarian serous cystoadenofibroma attended at the General Hospital of Albacete between the years 2010 to 2022. RESULTS: 635 surgical specimens were analyzed, of which 57.74% corresponded to benign serous neoplasms, 17.41% to borderline serous neoplasms and 24.85% to malignant serous neoplasms. Twenty cases of patients with a diagnosis of ovarian serous cystoadenofibroma were identified. The mean age of these patients was 47 years, with limits of 9 and 74 years. One case was associated with a contralateral atypical serous proliferative atypical tumor. Treatment was surgical and no recurrences were identified in any of the cases. CONCLUSIONS: Serous cystoadenofibroma usually manifests as a complex ovarian cyst, with solid-cystic components and irregular septa; this is why it is often misdiagnosed as a malignant tumor before surgery. Freeze biopsy helps to confirm its benign nature and avoids unnecessary extensive surgery. Treatment consists mainly of surgical removal of the cyst with or without oophorectomy. The prognosis is usually excellent.

Uterine necrosis. A rare complication of embolisation due to post-partum haemorrhage.

Post-partum haemorrhage (PPH) is a major cause of maternal mortality, according to the WHO. Early PPH occurs in 5% to 15% of births. In 80% of cases, uterine atonia is the cause. We describe a case of uterine necrosis following uterine artery embolization (UAE). due to PPH. The patient was a 37-year-old woman who had a normal delivery after her second pregnancy, but experienced haemorrhage due to uterine atonia that failed to respond to drugs. She underwent UAE with Spongostan® with no complications. The peri-partum period was normal. At 16 days, she consulted due to recurrence of fever. Magnetic resonance imaging confirm the diagnosis of uterine necrosis. Abdominal hysterectomy was performed.

Congenital undifferentiated sarcoma associated to BCOR-CCNB3 gene fusion.

Small round cell sarcomas are aggressive bone and soft tissue tumors that predominantly affect children and young adults. A new group of sarcomas with a recurrent BCOR-CCNB3 gene fusion has been recently identified in previously unclassifiable small round cell sarcomas. BCOR-CCNB3 sarcomas share clinical and pathologic similarities with Ewing sarcoma, but show a stronger male predilection and less aggressiveness, as well as distinct gene expression profiling and pangenomic SNP array analyses. We report the unusual case of a congenital BCOR-CCNB3 retroperitoneal sarcoma in a female born at 34th gestational week, which was diagnosed in necropsy after 21hours of life. Immunohistochemical analysis showed diffuse expression of CD99 and CCNB3. SNPa showed two focal segmentary deletions at 5q34 and 22q11.23, the latter harboring among others the SMARCB1/INI1 tumor suppressor gene. Immunohistochemistry confirmed loss of INI1 in tumor cells, which has not been previously reported in this type of undifferentiated sarcomas.

[Neuroendocrine renal carcinoma. Presentation of a case]. / Carcinoma renal neuroendocrino. Presentación de un caso.

OBJECTIVES: To report a new case of neuroendocrine renal cell carcinoma. METHODS: We report the case of a 76-year-old woman with neuroendocrine renal cell carcinoma who underwent radical nephrectomy without any further adjuvant treatment. We performed a bibliographic review about this rare renal neoplasia of which there are less than 20 published case reports. RESULTS: Patient is asymptomatic four years after surgery, although she has local recurrence. CONCLUSIONS: Small cell renal cell carcinoma is a very rare neoplasia, affecting people over the age of 60 years, large in size, and metastatic at diagnosis. It has bad prognosis, with short survival times. The most adequate treatment has not been determined due to the scarcity of published cases; the combination of surgery and chemotherapy is the most frequently used.

An unusual expression of hyperplastic gastropathy (Menetrier type) in twins.

Menetrier's disease is an uncommon condition of unknown aetiology. We describe two cases of male identical twins with haematemesis aged 29 and 35 years that exhibited a similar and particular form of this hyperplastic gastropathy. Their stomachs showed confluent polypoid mucosal projections affecting mainly the gastric fundus and the antrum. To the best of our knowledge, only four previous cases have been reported in a familial setting, and this is the first documented example of an occurrence in twins. These two cases suggest the possibility of a genetic predisposition for this condition.

Plexiform fibrohistiocytic tumor without multinucleated giant cells: a case report.

Plexiform fibrohistiocytic tumor (PFT) is a rare but distinctive soft tissue tumor of children and young adults characterized by a mixture of histiocyte-, myofibroblast-, and osteoclast-like giant cells arranged in a plexiform pattern. We report the clinicopathologic and immunohistochemical features of an apparently unique case of PFT without multinucleated giant cells presenting in a 3-year-old child. Light microscopy revealed a subcutaneous tumor composed of a plexiform proliferation of histiocyte- and myofibroblast-like cells. Multinucleated osteoclast-like giant cells, the third classic cellular component of this mesenchymal neoplasm, were not observed. The differential diagnosis is also discussed. Emphasis is placed on the importance of the recognition of PFT, because it may exhibit an aggressive behavior.