Pathological features and clinicopathological significance of TERT promoter mutation in breast fibroepithelial tumors without definite diagnosis / 中华病理学杂志

Objective: To investigate the pathological features and the clinicopathological significance of TERT detection in those tumors that were difficult to diagnosis. Methods: A total of 93 cases of fibroepithelial tumors without definite diagnosis were collected from the Affiliated Hospital of Qigndao University between 2013 and 2021. The clinical details such as patients' age and tumor size were collected. All slides were re-reviewed and the pathologic parameters, including stromal cellularity, stromal cell atypia, stromal cell mitoses, and stromal overgrowth were re-interpreted. Sanger sequencing was used to detect TERT promoter status, and immunohistochemistry was performed to detect TERT protein expression. The relationship between TERT promoter mutation as well as protein expression levels and the clinicopathological parameters were also analyzed. Results: The patients' ages ranged from 30 to 71 years (mean of 46 years); the tumor size ranged from 1.2 to 8.0 cm (mean 3.8 cm). These tumors showed the following morphologic features: leafy structures in the background of fibroadenoma, or moderately to severely abundant stromal cells. The interpretations of tumor border status were ambiguous in some cases. The incidence of TERT promoter mutation was high in patients of age≥50 years, tumor size≥4 cm, and stromal overgrowth at ×4 or ×10 objective, and these clinicopathologic features were in favor of diagnosis of phyllodes tumors. TERT protein expression levels was not associated with the above clinicopathologic parameters and its promoter mutation status. Conclusions: The diagnostic difficulty for the breast fibroepithelial tumors is due to the difficulty in recognition of the leafy structures or in those cases with abundant stromal cells. A comprehensive evaluation combined with morphologic characteristics and molecular parameters such as TERT promoter may be helpful for the correct diagnosis and better evaluating recurrence risk.

Atypical presentation of fibroepithelial polyp: a report of two cases / Apresentação atípica de pólipo fibroepitelial: um relato de dois casos

ABSTRACT Fibroepithelial polyps are benign non-epithelial tumors arising from mesodermal tissue and are commonly found on the skin. They can develop on the eyelid and surrounding area and rarely appear at other sites. While most cutaneous cases are diagnosed incidentally, the lesions may be symptomatic based on their location. The etiology of fibroepithelial polyps is not fully understood but may involve trauma, chronic irritation, allergic factors, and developmental or congenital causes. Although fibroepithelial polyps are benign lesions, they can be malignant in extremely rare cases. Herein we discuss 2 cases of fibroepithelial polyp with an atypical presentation and their treatment.

RESUMO Pólipos fibroepiteliais são tumores benignos não-epiteliais que surgem do tecido mesodérmico e são comumente encontrados na pele. Eles podem se desenvolver na pálpebra e na área adjacente, e raramente aparecem em outros locais. Embora a maioria dos casos cutâneos seja diagnosticada incidentalmente, as lesões podem ser sintomáticas com base em sua localização. A etiologia dos pólipos fibroepiteliais não é completamente compreendida, mas pode envolver trauma, irritação crônica, fatores alérgicos e causas de desenvolvimento ou congênitas. Apesar dos pólipos fibroepiteliais serem lesões benignas, podem ser malignos em casos extremamente raros. Aqui discutimos 2 casos de pólipo fibroepitelial com uma apresentação atípica e seu tratamento.

Unusual size, topography, and surgical resolution of an acquired fibrokeratoma

Abstract: Acquired fibrokeratoma is a rare benign skin tumor that usually manifests as a slow-growing solitary nodular lesion of the digits. We report a case of plantar acquired fibrokeratoma evidencing its atypical size and topography, in addition to the treatment with simple surgical excision followed by healing by second intention. Nondigital fibrokeratomas may occur in 18% of cases and rarely affect the palmoplantar region. These lesions are usually asymptomatic and show ≥ 3cm in size at the time of diagnosis due to delayed diagnosis. Complete surgical excision is the treatment of choice, which is usually curative. In general, primary closure is chosen; however healing by second intention becomes an option in regions of difficult approach.

Tumores benignos de vulva: revisión y caso clínico de acrocordón / Benign tumors of vulva: review and case report of achrocordon

La región vulvovaginal es una zona muy compleja por todos los elementos que la conforma y puede ser origen de un gran número de tumores benignos y en menor frecuencia de tumores malignos. En las últimas décadas, los tumores vulvovaginales han tenido un avance significativo en cuanto a su diagnóstico y tratamiento, dado por las aportaciones de la biología celular y molecular. El presente artículo pretende ser una referencia práctica para el diagnóstico clínico e histopatológico de estos tumores benignos así como en el tratamiento ambulatorio de algunos de ellos y su vigilancia.

The vulvovaginal region is a very complex area because of its anatomy and the fact that it can be source of a large number of benign tumors and less frequent malignant tumors. In recent decades, there have been significant gains in the diagnosis and treatment of vulvovaginal tumors, thanks to the contributions of cellular and molecular biology. The purpose of this review article is to serve as a practical reference for clinical and pathological diagnosis as well as in the outpatient treatment and monitoring of these benign tumors.

Tracheal polyp treated with endobronchial electrocautery.

Fibroepithelial polyps of trachea are extremely rare. Here, we report a case of tracheal polyp in a 40-year-old woman that was managed successfully with endobronchial electrocautery with a review of the relevant literature.

Fibroepithelial Polyp of the Bronchus: CT and Histopathologic Findings

A fibroepithelial polyp of the bronchus is a rare, benign, and endobronchial tumor, histologically consisting of fibrovascular stroma covered by normal respiratory epithelium. We report a case of a fibroepithelial polyp arising from the left main bronchus. On CT, a characteristic lobulating contour of the endobronchial nodule was well visualized, which histopathologically represented a typical papillary growth pattern of the nodule. Such a lobulating contour of the nodule might help make a correct diagnosis of this rare disease among other various endobronchial neoplasms.

Biópsia com agulha grossa guiada por ultrassonografia para o diagnóstico dos tumores fibroepiteliais da mama / Ultrasound-guided core needle biopsy for the diagnosis of fibroepithelial breast tumors

OBJETIVO: avaliar a taxa de concordância da biópsia percutânea com agulha grossa guiada por ultrassom seguida pela biópsia excisional em nódulos de mama palpáveis, sugestivos de tumores fibroepiteliais. MÉTODO: estudo retrospectivo que selecionou 70 biópsias com diagnóstico histológico de tumor fibroepitelial em 67 dentre 531 pacientes com lesões mamárias submetidas à biópsia percutânea com agulha grossa guiada por ultrassonografia, com transdutor linear de alta frequência (7.5 MHz), utilizando pistola automática Bard-Magnum e agulha 14 gauge. Foram incluídos os casos com diagnóstico de tumor fibroepitelial na biópsia percutânea ou biópsia excisional. Biópsias com diagnóstico histopatológico de fibroesclerose também foram incluídas no estudo. A força da concordância entre o resultado da biópsia percutânea e da biópsia excisional foi medida pelo coeficiente de Kappa. RESULTADOS: a biópsia excisional revelou 40 casos de fibroadenoma (57,1 por cento), 19 de tumor filoide (27,2 por cento) e 11 de fibroesclerose (15,7 por cento). A taxa de concordância para o fibroadenoma foi substancial (k = 0,68; IC95 por cento = 0,45 - 0,91), quase perfeita para o tumor filoide (k = 0,81; IC95 por cento = 0,57 - 1,0) e moderada para a fibroesclerose (k = 0,58; IC95 por cento = 0,36 - 0,90). CONCLUSÕES: a biópsia percutânea com agulha grossa é propedêutica minimamente invasiva que tem taxas de concordância com a biópsia excisional, de "substancial" a "quase perfeita". A fibroesclerose deve ser considerada no diagnóstico diferencial dos tumores fibroepiteliais.

PURPOSE: to evaluate the concordance rate of ultrasound-guided core needle biopsy followed by excisional biopsy in palpable breast lumps, suggestive of fibroepithelial tumors. METHOD: a retrospective study included 70 biopsies with a histological diagnosis of fibroepithelial tumor in 67 out of 531 patients with breast lesions submitted to ultrasound-guided core needle biopsy with a high frequency (7.5 MHz) linear transducer, using an automatic Bard-Magnum gun and a 14-gauge needle. Cases with a diagnosis of fibroepithelial tumor by core needle biopsy or excisional biopsy and with a diagnosis of fibrosclerosis were included in the study. The agreement between the two biopsy methods was assessed using the Kappa coefficient. RESULTS: excisional biopsy revealed 40 cases of fibroadenoma (57.1 percent), 19 cases of phyllodes tumor (27.2 percent), and 11 cases of fibrosclerosis (15.7 percent). The concordance rate for fibroadenoma was substantial (k = 0.68, 95 percentCI = 0.45 - 0.91), almost perfect for the phyllodes tumor (k = 0.81, 95 percentCI = 0.57 - 1.0), and moderate for fibrosclerosis (k = 0.58, 95 percentCI = 0.36 - 0.90). CONCLUSIONS: the core needle biopsy is a minimally invasive method that has "substantial" to "almost perfect" concordance rate with excisional biopsy. Fibrosclerosis should be considered in the differential diagnosis of fibroepithelial tumors.

Multiple, Bilateral Fibroepithelial Polyps Causing Acute Renal Failure in a Gastric Cancer Patient

We report a case of primary fibroepithelial polyps (FEPs) in the middle of both ureters in a patient with advanced gastric cancer and acute renal failure. Ureteral FEPs are rare benign lesions, and multiple, bilateral lesions are extremely rare. To our knowledge, this report is the seventh case of bilateral FEPs in the literature. Our case has clinical implications because FEPs should be considered as a cause of ureteral obstruction inducing acute renal failure in advanced gastric cancer.

Pólipo fibroepitelial con estroma atípico en piel y mucosa anogenital / Fibroepithelial polyp with atypical stroma in skin and anal-genital mucosa

El pólipo fibroepitelial es una lesión benigna de piel y mucosa genital y perineal. Se presenta en mujeres jóvenes, es poco frecuente e histológicamente muestra estroma laxo con prominentes y numerosas células atípicas, pleomórficas, multinucleadas. La lesión puede confundirse con rabdomiosarcoma botrioide, angiomixoma agresivo y neurofibroma mixoideo. Se revisaron los casos de nuestro archivo del período 1990-1996. Se recolectaron 13 casos, todas mujeres, cuya edad varió de recién nacido a 74 años. El tamaño de la lesión fluctuó de 0,3 a 2,5 cm; 12 lesiones únicas y 1 múltiple; localizaciones: vagina 6 (46,2 por ciento), ano 3 (23,1 por ciento), vulva 2 (15,4 por ciento) y uretra 1 (7,7 por ciento); en 1 caso la localización no se consignó. Histológicamente, las lesiones presentaban revestimiento escamoso normotípico, estroma, conjuntiva laxo, vascularizado, con moderada cantidad de células atípicas, pleomórficas, en partes formando rosetas, sin mitosis ni invasión del epitelio. Esta veriedad de papiloma es una lesión benigna, que simula sarcoma, que debe tenerse presente en el diagnóstico diferencial de sarcoma y pseudosarcoma de mucosa vaginal y piel perineal