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García-Perdomo HA, Dávila-Raigoza AM, Summers E, Billingham L, Necchi A, Griffiths G, Spiess PE. Urethral cancer: a comprehensive review endorsed by the Global Society of Rare Genitourinary Tumours. BJU Int 2024. [PMID: 38587299 DOI: 10.1111/bju.16334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
OBJECTIVE To determine the effectiveness and adverse effects of urethrectomy alone or as part of multimodal therapy (MMT). METHODS A comprehensive search was conducted across MEDLINE (OVID), EMBASE, LILACS and the Cochrane Central Register of Controlled Trials (CENTRAL) databases, from their inception to the present date. The study cohort comprised individuals aged 16 years and older diagnosed with urethral tumours at any stage who underwent either isolated urethrectomy or urethrectomy as an integral component of MMT. RESULTS Ninety-two studies comprising 25 480 patients met the inclusion criteria. Surgical outcomes for urethral cancer vary considerably, with 5-year overall survival (OS) ranging from 10% to 68% based on disease extent, approach, and gender. Radiotherapy (RT) alone provides 5-year OS of approximately 40%. Combined regimens provide better outcomes compared to single modalities, including reduced recurrence and enhanced survival. However, trimodal therapy showed survival benefits only for urothelial subtypes, indicating the need to tailor management according to cancer type. MMT with neoadjuvant chemotherapy prior to surgery demonstrated the most consistent survival gains. CONCLUSIONS The management of urethral cancer demands a nuanced, personalised approach, accounting for factors such as tumour location, sex, and tumour stage. MMT combining surgery, chemotherapy and RT has shown the ability to enhance outcomes in advanced disease. More extensive collaborative studies through specialised centres are imperative to advance evidence-based protocols and refine treatment in order to improve survival.
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Affiliation(s)
- Herney Andrés García-Perdomo
- UROGIV Research Group, Department of Surgery, School of Medicine, Universidad del Valle, Cali, Colombia
- Division of Urology/Urooncology, Department of Surgery, School of Medicine, Universidad del Valle, Cali, Colombia
| | | | - Ellie Summers
- Cancer Research U.K., Clinical Trials Unit, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Lucinda Billingham
- Cancer Research U.K., Clinical Trials Unit, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Andrea Necchi
- Urological Research Institute, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, Milan, Italy
| | - Gareth Griffiths
- Cancer Research U.K., Southampton Clinical Trials Unit, University of Southampton, Southampton, UK
| | - Philippe E Spiess
- Department of Genitourinary Oncology and Tumor Biology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
- Urology and Oncology, University of South Florida, Tampa, FL, USA
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2
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Huang Y, Wei L, Huang Y, Wen S, Liu T, Duan X, Wang Y, Zhang H, Fan B, Hu B. Identification of distinct genomic features reveals frequent somatic AHNAK and PTEN mutations predominantly in primary malignant melanoma presenting in the ureter. Jpn J Clin Oncol 2022; 52:930-943. [PMID: 35578896 DOI: 10.1093/jjco/hyac061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 04/07/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Primary malignant melanoma of the ureter is extremely rare. Genetic variants to the increased risk of developing the disease have not yet been investigated. METHODS Tumour mutation profiling for primary malignant melanoma of the ureter was performed by whole-exome sequencing. Immunohistochemistry was performed to verify histopathological features and the variants of predisposing genes and driver mutation genes. Furthermore, we conducted a literature review and Surveillance, Epidemiology and End Result-based study by searching public databases. RESULTS We identified 38 somatic single nucleotide variants and 9 somatic insertions and deletions (INDELs) in tumour specimens. After filtering with the Cancer Gene Census database, seven predisposing genes and two driver mutation genes were identified. Moreover, the immunohistochemical profile showed that tumour cells were positive for Melan-A, melanoma gp100 human melanoma black 45 (HMB45), S100 beta and P53. The expression levels of two driver mutation genes (phosphatase and tensin homolog (PTEN) and desmoyokin (AHNAK) and five predisposing genes (AT-rich interaction domain 1B (ARID1B), catalase, eukaryotic translation initiation factor 4 gamma 3 (EIF4G3), ANK3 and collagen type I) were significantly downregulated in tumour tissues compared to paracancerous tissues. In the literature review and Surveillance, Epidemiology and End Results-based study, patients with primary malignant melanoma of the urinary tract had worse clinical outcomes than patients with primary urothelial carcinoma after 1:2 propensity score matching (P = 0.010). Additionally, Cox multivariate analysis for patients with primary malignant melanoma of the urinary tract indicated that distant metastasis (hazard ratio = 1.185; P = 0.044) was an independent predictor for overall survival, and tumour focality (hazard ratio = 0.602; P = 0.017) and non-surgery (hazard ratio = 0.434; P = 0.003) were independent factors for tumour progression. CONCLUSIONS Our study is the first to provide evidence that the distinct phenotypes of primary malignant melanoma of the ureter may be due to different genetic variations. The prognosis of primary malignant melanoma of the urinary tract was poorer than that of primary urothelial carcinoma of the urinary tract.
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Affiliation(s)
- Yan Huang
- Department of Urology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, China
| | - Lai Wei
- Department of Radiology, Sichuan Province Orthopedic Hospital, Chengdu, Sichuan, China
| | - Yuanbin Huang
- Department of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Shuang Wen
- Department of Pathology, Dalian Friendship Hospital, Dalian, Liaoning, China
| | - Tianqing Liu
- Department of Pathology, Dalian Friendship Hospital, Dalian, Liaoning, China
| | - Xu Duan
- First Clinical College, Dalian Medical University, Dalian, Liaoning, China
| | - Yutong Wang
- First Clinical College, Dalian Medical University, Dalian, Liaoning, China
| | - Hongshuo Zhang
- Department of Biochemistry, Institute of Glycobiology, Dalian Medical University, Dalian, Liaoning, China
| | - Bo Fan
- Department of Urology, Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Bin Hu
- Department of Urology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, China
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Dayyani F, Hoffman K, Eifel P, Guo C, Vikram R, Pagliaro LC, Pettaway C. Management of advanced primary urethral carcinomas. BJU Int 2014; 114:25-31. [PMID: 24447439 DOI: 10.1111/bju.12630] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Primary urethral carcinoma (PUC) is a rare malignancy accounting for <1% of genitourinary cancers, with a predilection for men and African-Americans. The sites and histology of urethral carcinoma vary by gender and anatomical location. Squamous cell carcinoma is most common among both genders but adenocarcinomas are noted in 15-35% of cases among women. Obstructive or irritative symptoms and haematuria are common modes of presentation. Clinical evaluation includes cystourethroscopy with biopsy and examination under anaesthesia. Magnetic resonance imaging provides a highly effective method to image the primary tumour while defıning the potential involvement of surrounding structures. Most tumours are localised, with regional metastases to nodal sites seen in up to 30% of cases in both genders, while distant metastases at presentation are rare (0-6%), but occur in up to 40% of cases with recurrent disease. Among men, the two most important prognostic factors are disease location and stage. Low-stage tumours (T1-2) and tumours involving the fossa navicularis or the penile urethra have a better prognosis than higher stage tumours (>T2 or N+) and lesions involving the bulbomembranous urethra. In women, in addition to stage and location, the size of the tumour has also prognostic implications. While surgery and radiation therapy (RT) are of benefit in early stage disease, advanced stage PUC requires multimodal treatment strategies to optimise local control and survival. These include induction chemotherapy followed by surgery or RT and concurrent chemoradiation with or without surgery. The latter strategy has been used successfully to treat other human papillomavirus-related cancers of the vagina, cervix and anus and may be of value in achieving organ preservation. Given the rarity of PUC, prospective multi-institutional studies are needed to better define the optimal treatment approach for this disease entity.
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Affiliation(s)
- Farshid Dayyani
- Division of Hematology and Oncology, Banner MD Anderson Cancer Center, Gilbert, AZ, USA; Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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4
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Swartz MA, Porter MP, Lin DW, Weiss NS. Incidence of primary urethral carcinoma in the United States. Urology 2006; 68:1164-8. [PMID: 17141838 DOI: 10.1016/j.urology.2006.08.1057] [Citation(s) in RCA: 147] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2006] [Revised: 05/29/2006] [Accepted: 08/11/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Primary urethral carcinoma is rare, and the demographic correlates of its incidence have not been examined using population-based data. METHODS The National Cancer Institute Surveillance, Epidemiology, and End Results database was used to identify persons diagnosed with primary urethral carcinoma from 1973 to 2002. During this period, the Surveillance, Epidemiology, and End Results program included population-based tumor registries in nine geographic areas that represented approximately 10% of the U.S. population. The incidence rates were tabulated for the major histologic subtypes according to age, sex, and race. RESULTS Primary urethral carcinoma was identified in 1075 men and 540 women, with an annual age-adjusted incidence rate of 4.3 per million and 1.5 per million, respectively. The annual incidence rate increased with age to a peak of 32 per million men and 9.5 per million women in the 75 to 84-year age group. The rate was 5.0 per million and 2.5 per million for African Americans and whites, respectively. The histologic types were transitional cell carcinoma in 888 patients (55%), squamous cell carcinoma in 348 (21.5%), and adenocarcinoma in 265 (16.4%). The incidence of the three primary histologic types varied by race and sex. CONCLUSIONS In the United States, the incidence of urethral carcinoma is relatively higher in men and African Americans, with a histologic profile differing from that previously described.
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Affiliation(s)
- Mia A Swartz
- Department of Urology, University of Washington School of Medicine, Seattle, Washington 98195, USA.
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Dimarco DS, Dimarco CS, Zincke H, Webb MJ, Bass SE, Slezak JM, Lightner DJ. Surgical treatment for local control of female urethral carcinoma. Urol Oncol 2005; 22:404-9. [PMID: 15464921 DOI: 10.1016/s1078-1439(03)00174-1] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2003] [Revised: 09/12/2003] [Accepted: 10/22/2003] [Indexed: 11/23/2022]
Abstract
We reviewed 53 patients (mean age 63 years) who underwent partial urethrectomy (n = 26) or radical extirpation (n = 27) for primary female urethral cancer from 1948 through 1999. Clinical stage, histology, high pathologic stage (3 or 4) and grade, tumor location, nodal status, surgery type, adjuvant therapy, and treatment decade were candidate outcome predictors. The predominant carcinomas were squamous cell (n = 21), transitional cell (TCC) (n = 15), and adenocarcinoma (n = 14). For adjuvant therapy, 20 patients had radiation (8 preoperatively), 2 had radiation + chemotherapy, and 1 had chemotherapy alone. During mean follow-up of 12.8 years, 27 patients had recurrence; 15 local only, 2 distant only and 10 local + distant. Of patients undergoing partial urethrectomy for pT1-3 tumors, 6/27 (22%) had urethral recurrence. Overall, there were no bladder recurrences. Recurrence-free survival +/- standard error (SE) at 10 years was 45 + 8%. Those who recurred had a cancer mortality rate of 71% at 5 years postrecurrence. The estimated 10-year cancer-specific survival (CSS) and crude survival (CS) rates were 60 +/- 8% and 42 +/- 7%, respectively. Pathologic stage was predictive for local recurrence (P = 0.02) and CSS (P = 0.01). Positive nodes on pathology were related to local and distant recurrence and CSS (P = 0.01). Upon review, partial urethrectomy resulted in a high urethral recurrence rate (22%) with no bladder recurrences. These patients may be better served with radical urethrectomy and creation of continent catheterizable stoma.
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Abstract
Conventional radiographic contrast material-enhanced studies (eg, retrograde urethrography [RUG], voiding cystourethrography [VCUG], double-balloon catheter urethrography) and ultrasonography are useful in evaluating the anatomy of the urethra but are limited in demonstrating anatomic derangement of adjacent structures. Since the anatomic details of both the urethra and periurethral tissues can be evaluated noninvasively with magnetic resonance (MR) imaging, this modality can be used as an adjunctive tool for evaluation of urethral abnormalities. In patients with congenital anomalies, MR imaging is reserved for cases of intersex anomalies or complex genitourinary anomalies, in which evaluation of internal organs is essential. MR imaging may demonstrate diverticula that are not seen on radiographic contrast-enhanced studies, including VCUG, RUG, or double-balloon catheter study. In cases of inflammation, MR imaging can demonstrate not only inflammatory infiltration around the urethra but also the presence of a periurethral abscess or sinus tract. In cases of trauma, MR imaging is helpful in assessing the presence and extent of anterior or posterior urethral injury and predicting the occurrence of complications. At MR imaging, a fistula can be seen as a direct communicating channel with an adjacent organ. In patients with urethral tumors, the major role of MR imaging is in local staging.
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Affiliation(s)
- J Ryu
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul 135-710, Korea
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Oliva E, Quinn TR, Amin MB, Eble JN, Epstein JI, Srigley JR, Young RH. Primary malignant melanoma of the urethra: a clinicopathologic analysis of 15 cases. Am J Surg Pathol 2000; 24:785-96. [PMID: 10843280 DOI: 10.1097/00000478-200006000-00003] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The clinical and pathologic features of 15 primary urethral melanomas occurring in patients (nine women and six men) age 44 to 96 years (mean age, 73 yrs) are described. In the men the tumor involved the distal urethra. In eight women it involved the distal urethra, usually the meatus; both the distal and proximal urethra were involved in one woman. The tumors were typically polypoid and ranged from 0.8 to 6 cm (mean, 2.6 cm) in maximum dimension. A vertical growth phase was present in all tumors, with a prominent nodular component in seven of them. A radial growth phase was seen in nine tumors. The depth of invasion ranged from 2 to 17 mm. The tumors had diffuse, nested, storiform, or mixed growth patterns. The neoplastic cells typically had abundant eosinophilic cytoplasm, large nuclei with prominent nucleoli, and brisk mitotic activity. Melanin pigment was seen in 12 tumors but was conspicuous in only six. At the time of diagnosis, 13 tumors were confined to the urethra and two patients had lymph node metastasis. Nine patients died of disease 13 to 56 months after initial diagnosis and treatment, and one patient had a local recurrence at 4 years and subsequently died of sepsis 1 year later. Three patients were alive and well at 11 months, 23 months, and 7 years. One patient died at the time of the initial operation, and one died of a ruptured aortic aneurysm at 3 years without evidence of melanoma at autopsy. Primary malignant melanomas of the urethra, one fifth of which are amelanotic, must be included in the differential diagnosis of a number of primary neoplasms that involve the urethra, including transitional cell carcinoma, sarcomatoid carcinoma, and sarcomas. Conventional prognostic factors, such as depth of invasion or tumor stage, do not seem to play as important a role in predicting survival as the mucosal location and the nodular growth present frequently in these tumors.
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Affiliation(s)
- E Oliva
- Department of Pathology, Harvard Medical School, Massachusetts General Hospital, Boston 02114, USA
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8
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Abstract
Carcinoma of the female urethra is uncommon. The review of literature and our own experience indicates that early distal urethral cancers (squamous and adenocarcinoma) can be treated either with surgery (70-80% 5-year survival) or with radiotherapy (brachytherapy) with excellent results (75% 5-year survival). Early proximal or entire urethral cancers (squamous and adenocarcinoma), if treated surgically, will require exenterative procedures. Alternatively, these cancers can be treated with a combination of external beam and brachytherapy with or without chemotherapy with good results and preservation of organs. Surgery can be used for failures or persistent tumors. Advanced cancers require a multimodality approach, and a combination of radiation and chemotherapy appears to be the optimal way to treat these patients-with surgery to be used for biopsy-proven persistent tumors or recurrences.
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Affiliation(s)
- B Micaily
- Department of Radiation Oncology, Allegheny University of the Health Sciences, Philadelphia, Pennsylvania 19102-1192, USA
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9
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Tran LN, Krieg RM, Szabo RJ. Combination chemotherapy and radiotherapy for a locally advanced squamous cell carcinoma of the urethra: a case report. J Urol 1995; 153:422-3. [PMID: 7815606 DOI: 10.1097/00005392-199502000-00042] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A 68-year-old patient with advanced stage IVB squamous cell carcinoma of the urethra was treated successfully by combined radiation therapy to 5,580 cGy., and chemotherapy with 5-fluorouracil and mitomycin. Dramatic response in the size of the tumor was noted and on the last day of treatment there was no definite evidence of persistent disease. No surgery was performed except for urinary diversion. The patient remained without disease for 5.5 years clinically and pathologically. In this case the combination of radiation therapy and chemotherapy obviated the need for radical surgery. This clinical behavior is markedly similar to the behavior of anal canal carcinoma when using a similar regimen. Therefore, further clinical investigation for combined modality treatment is warranted.
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Affiliation(s)
- L N Tran
- Department of Radiation Oncology, University of California, San Francisco
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Grigsby PW, Corn BW. Localized urethral tumors in women: indications for conservative versus exenterative therapies. J Urol 1992; 147:1516-20. [PMID: 1593679 DOI: 10.1016/s0022-5347(17)37614-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The objectives of this retrospective review were to evaluate patient and tumor characteristics, survival, patterns of failure and sequelae of therapy for women with urethral carcinoma. Primary urethral carcinoma was diagnosed in 33 women referred to the Washington University Medical Center and the Mallinckrodt Institute of Radiology, Radiation Oncology Center from November 1959 through June 1988. Treatment consisted of surgery alone in 6 patients, surgery and irradiation in 7, and irradiation alone in 20. Median followup was 4.7 years. The 5-year overall and progression-free survivals for all patients were 41% and 36%, respectively. Tumor location, size and T stage were predictive for survival. No patient with a lesion of greater than 4 cm. survived at 5 years if treated with irradiation alone, surgery alone or irradiation and nonexenterative surgery. Exenterative surgery plus irradiation was curative in 1 of 4 patients. Pelvic failures occurred in approximately 50% of all patients. Severe complications of therapy occurred in 30% of the patients treated with irradiation alone, 1 of 7 treated with surgery and irradiation, and 0 of 6 treated with surgery only. Surgery only or irradiation only may be curative in patients with lesions less than 2 cm. Larger lesions require a combination of surgery and irradiation.
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Affiliation(s)
- P W Grigsby
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri
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THE ROLE OF RADIATION THERAPY IN THE MANAGEMENT OF CARCINOMA OF THE MALE AND FEMALE URETHRA. Urol Clin North Am 1992. [DOI: 10.1016/s0094-0143(21)00401-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
Twenty-two cases of adenocarcinoma of the urethra in women were studied. Nine were classified histologically as clear cell adenocarcinoma and 13 were classified as columnar/mucinous adenocarcinoma. Thirteen patients (59%) were black. The average patient age was 61 years (range, 27 to 76 years). Follow-up ranged from 6 to 194 months, (average, 40 months). At presentation, most patients (82%) had extension of tumor into adjacent structures or metastases to regional lymph nodes. Eighty-six percent received radiation therapy and 41% underwent an anterior exenteration or cystectomy. Eight of 22 patients (36%) had no evidence of disease 21 to 194 months after diagnosis (average, 83 months). Fourteen (64%) were dead of disease 6 to 23 months after diagnosis (average, 15 months). In general, the extent of tumor correlated best with survival time. Forty-four percent of patients with clear cell adenocarcinoma were dead of disease within 24 months of diagnosis, in contrast to 77% of those with columnar/mucinous adenocarcinoma, suggesting that patients with clear cell adenocarcinoma may have a better prognosis than those with columnar/mucinous adenocarcinoma. However, the difference in survival probability between the two groups was not found to be statistically significant. Recognition of the two histologic types of urethral adenocarcinoma is important to prevent misdiagnosis of such tumors as metastases (or direct extension) of nonurethral neoplasms having a similar histologic appearance. A possible predilection of the disease for black women has not been previously described.
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Svanholm H, Andersen OP, Røhl H. Tumour of female paraurethral duct. Immunohistochemical similarity with prostatic carcinoma. VIRCHOWS ARCHIV. A, PATHOLOGICAL ANATOMY AND HISTOPATHOLOGY 1987; 411:395-8. [PMID: 3114949 DOI: 10.1007/bf00713386] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A case of adenocarcinoma derived from a female paraurethral duct is described. Morphologically the tumour looked like a prostatic adenocarcinoma. Furthermore, the tumour cells stained positively with antibodies to prostatic specific antigen and prostatic specific acid phosphatase. The karyotype of the patient was 45,x/46,xx/47,xxx/46,xt(x;13)(p11;q22) demonstrating that the patient was not a hermaphrodite. The tumour therefore represented female homology of a prostatic adenocarcinoma.
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Tanabe ET, Mazur MT, Schaeffer AJ. Clear cell adenocarcinoma of the female urethra: clinical and ultrastructural study suggesting a unique neoplasm. Cancer 1982; 49:372-8. [PMID: 7198504 DOI: 10.1002/1097-0142(19820115)49:2<372::aid-cncr2820490227>3.0.co;2-e] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A case of clear cell adenocarcinoma arising in the female urethra is described. The tumor had a tubulocystic pattern and intracytoplasmic glycogen, resembling clear cell carcinomas that occur in the vagina and upper female genital tract. Ultrastructural study, however, showed abundant and elongated microvilli on the tumor cells, a feature not seen in clear cell carcinomas or other common forms of carcinoma arising in the female genital tract. Six other cases of similar tumors of the female urethra were found in medical literature, yet there was no example of this tumor in the bladder or male urethra. Clinical and ultrastructural observations suggest that clear cell carcinoma of the female urethra is a distinctive neoplasm. Abundant microvilli provide morphologic evidence supporting the possibility of origin from the mesonephros. Radical extirpative surgery with urinary diversion appears to be the treatment of choice.
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Abstract
Our patient had a highly malignant and poorly differentiated tumor in the distal urethra. A conservative operation was performed because the precise nature of the tumor was not clear with light microscopy. An ultrastructural study established the final diagnosis of malignant urethral melanoma and anterior exenteration was performed. An aggressive operation should be considered as the primary approach once malignant melanoma is diagnosed. Ultrastructural studies should be introduced early in the diagnostic process when light microscopy is insufficient to provide a definitive diagnosis of urethral malignancy.
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Abstract
Twenty patients of primary urethral carcinoma in females are presented. Age group affected was between 40 and 60 years. Vague symptoms in early stage delayed the diagnosis in most patients. Surgery is the treatment of choice for meatal or anterior urethral lesions while combined Radiotherapy and surgery has been suggested as treatment for entire urethral lesions. In the present series 33% three years and 21% five years survivals were noted.
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Abstract
Cancer of the female urethra, although uncommon, is important because unless recognized early and treated adequately, death will ensue, preceded by much morbidity. The authors present a series of 62 patients with 70 primary tumors, and 3 patients with secondary tumors. A comprehensive classification of neoplasms of the female urethra is also included.
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