scholarly journals Malignant melanoma of the bladder: A case report

2014 ◽  
Vol 8 (1-2) ◽  
pp. 54 ◽  
Author(s):  
Hamide Sayar ◽  
Seyda Erdogan ◽  
Fulya Adamhasan ◽  
Esma Gurbuz ◽  
Mehmet Fatih İnci
Keyword(s):  
Case Report ◽  
Malignant Melanoma ◽  
Immunohistochemical Staining ◽  
Correct Diagnosis ◽  
Primary Lesion ◽  
Histological Features ◽  
Malignant Melanomas ◽  
Metastatic Lesions ◽  
S 100 ◽  
Hmb 45

Primary malignant melanoma of the bladder is very rare. Rather than being a primary lesion, malignant melanomas of the bladder are more commonly metastatic lesions. The histopathological appearance largely does not differ from that of melanoma at other body sites. It is often difficult to discriminate whether a bladder melanoma is primary or metastatic. Therefore, a careful review of histological features and performing necessary immunohistochemical staining procedures for S-100 protein and HMB-45 are very important in achieving a correct diagnosis. We report a case of hypomelanotic malignant melanoma of the bladder. Despite the variety of therapies available for primary melanomas of the bladder, the prognosis is still poor.

scholarly journals Primary ovarian malignant melanoma

2010 ◽  
Vol 67 (3) ◽  
pp. 252-255
Author(s):  
Milos Kostov ◽  
Biserka Vukomanovic-Djurdjevic ◽  
Dane Nenadic ◽  
Milos Pavlovic
Keyword(s):  
Case Report ◽  
Malignant Melanoma ◽  
Primary Melanoma ◽  
Histopathological Diagnosis ◽  
Solid Mass ◽  
Diagnostic Problem ◽  
S 100 ◽  
Black Color ◽  
Immunohistochemical Analyses ◽  
Hmb 45

Background. Primary ovarian malignant melanoma is extremely rare. It usually appears in the wall of a dermoid cyst or is associated with another teratomatous component. Metastatic primary malignant melanoma to ovary from a primary melanoma elsewhere is well known and has been often reported especially in autopsy studies. Case report. We presented a case of primary ovarian malignant melanoma in a 45- year old woman, with no evidence of extraovarian primary melanoma nor teratomatous component. The tumor was unilateral, macroscopically on section presented as solid mass, dark brown to black color. Microscopically, tumor cells showed positive immunohistochemical reaction for HMB-45, melan-A and S-100 protein, and negative immunoreactivity for estrogen and progesteron receptors. Conclusion. Differentiate metastatic melanoma from rare primary ovarian malignant melanoma, in some of cases may be a histopathological diagnostic problem. Histopathological diagnosis of primary ovarian malignant melanoma should be confirmed by immunohistochemical analyses and detailed clinical search for an occult primary tumor.

scholarly journals A Case of Primary Subglottic Malignant Melanoma with a Successful Surgical Treatment

2014 ◽  
Vol 2014 ◽  
pp. 1-3
Author(s):  
Shahzad Ahmad ◽  
Mahmoud Abdelghany ◽  
Curtis Goldblatt ◽  
Owen Stark ◽  
Nicholas Masciotra
Keyword(s):  
Surgical Treatment ◽  
Malignant Melanoma ◽  
Excisional Biopsy ◽  
Human Melanoma ◽  
Primary Malignant Melanoma ◽  
Shortness Of Breath ◽  
S 100 ◽  
Hmb 45

Primary subglottic malignant melanoma is a very rare and underdiagnosed neoplasm. We are reporting a case of primary malignant melanoma of subglottic mucosa in a 78-year-old woman who presented to our hospital with shortness of breath and hoarseness of voice. Laryngoscopy and excisional biopsy along with immunoreactivity to S-100 and human melanoma black-45 (HMB-45) confirmed the diagnosis. The patient was treated with laryngectomy followed by radiotherapy. Five years following surgical treatment, she continues to be asymptomatic. To our knowledge, there is only one reported case of primary malignant melanoma of subglottic mucosa in the medical literatures.

scholarly journals Malignant melanoma of the rectum presenting as cloacogenic polyp: a case report

2020 ◽  
Vol 102 (3) ◽  
pp. e67-e69
Author(s):  
JD Coyne ◽  
P O’Byrne
Keyword(s):  
Case Report ◽  
Malignant Melanoma ◽  
Mucosal Prolapse ◽  
Mucosal Melanoma ◽  
Common Condition ◽  
Malignant Melanomas ◽  
Anorectal Region

Mucosal malignant melanomas are uncommon. It is rare for a primary mucosal melanoma to occur in the anorectal region. Anorectal polypoid mucosal prolapse however, is a relatively common condition. We report a case of malignant melanoma presenting as mucosal prolapse and inducing changes similar to inflammatory cloacogenic polyp.

scholarly journals Primary retromolar malignant melanoma in a Latin American patient

2020 ◽  
Vol 48 (4) ◽  
pp. 030006052091924
Author(s):  
Carlos-Martín Ardila ◽  
Joan-Michael Arce-Jaramillo ◽  
Efraín Álvarez-Martínez
Keyword(s):  
Latin America ◽  
Malignant Melanoma ◽  
Latin American ◽  
Surgical Excision ◽  
Primary Malignant Melanoma ◽  
Ki 67 ◽  
Metastatic Lesions ◽  
Immunohistochemistry Staining ◽  
American Patient ◽  
Hmb 45

Primary malignant melanoma of the oral mucosa is rare and has scarcely been reported in patients from Latin America. The most frequently affected sites include the palate and gingiva of the maxilla. In this report, we describe primary malignant melanoma in a Latin American patient. A 3 × 3.5-cm black tumor was observed on the upper left retromolar area. The lesion exhibited a sessile base, irregular edges, soft consistency, and pain on palpation. Immunohistochemistry staining results were positive for S100 and HMB-45; the Ki-67 index was 20%. Contrast tomography of the skull, face, abdomen, and thorax, as well as ultrasound of the liver, did not reveal metastatic lesions. The patient underwent wide surgical excision of the lesion, followed by radiotherapy; he was subsequently rehabilitated with a somato prosthesis.

Expression of antiapoptotic protein survivin in malignant melanoma

Biologia ◽  
2009 ◽  
Vol 64 (4) ◽  
Author(s):  
Marian Adamkov ◽  
L’udovít Lauko ◽  
Július Rajčáni ◽  
Soňa Bálentová ◽  
Silvia Rybárová ◽  
...  
Keyword(s):  
Malignant Melanoma ◽  
Tumor Cells ◽  
Immunohistochemical Staining ◽  
Diagnostic Marker ◽  
Nuclear Staining ◽  
Cytoplasmic Localization ◽  
Cytoplasmic Staining ◽  
Antiapoptotic Protein ◽  
Histological Features ◽  
Degree Of Malignancy

AbstractWe examined the expression of potential tumor marker survivin by immunohistochemical staining using antisurvivin antibody (DAKO, Clone 12C4) in a panel of 25 malignant melanomas. In each section, we assessed the percentage of positively stained tumor cells, the intensity of staining and its subcellular localization. Survivin was present in 23 out of 25 cases (92%). Nuclear staining was found in 2 of these 23 cases (8.7%) only, while cytoplasmic staining only was seen in 3 of them (13%). The combined nuclear as well as cytoplasmic localization of survivin was demonstrated in 18 out of 23 cases (78.3%). In 2 cases revealing nuclear staining only, the worse histological features were more pronounced than in 3 cases with cytoplasmic staining only. Our results suggest that nuclear positivity of survivin may correlate with the degree of malignancy. In addition, we conclude that overexpression of survivin involved in the pathogenesis of melanoma represents an important diagnostic marker.

scholarly journals A case of S-100 negative melanoma: A diagnostic pitfall in the workup of a poorly differentiated metastatic tumor of unknown origin

CytoJournal ◽  
2016 ◽  
Vol 13 ◽  
pp. 21 ◽  
Author(s):  
Anna Biernacka ◽  
Konstantinos D. Linos ◽  
Peter A. DeLong ◽  
Arief A. Suriawinata ◽  
Vijayalakshmi Padmanabhan ◽  
...  
Keyword(s):  
Malignant Melanoma ◽  
Primary Lung Cancer ◽  
Unknown Origin ◽  
Metastatic Tumor ◽  
Current Smoker ◽  
Prior History ◽  
Diagnostic Challenge ◽  
Malignant Melanomas ◽  
S 100 ◽  
Poorly Differentiated

When confronted with a metastatic poorly differentiated tumor of unknown origin, the initial workup includes the standard panel of immunostains to rule out carcinoma, sarcoma, lymphoma, and the greatest mimicker in pathology – malignant melanoma. Although not specific, the S-100 protein is expressed in over 95% of malignant melanomas. Herein, we present a case of multiorgan metastatic malignancy with a dominant hilar and mediastinal mass in a current smoker; clinically, highly suggestive of widespread primary lung cancer. This case was eventually classified as malignant melanoma, despite a significant diagnostic challenge due to lack of prior history, unusual cytomorphology, and S-100 protein negativity. A battery of immunostains was performed and the addition of other melanocytic-associated markers confirmed the melanocytic lineage of the neoplasm. This case highlights the pitfalls in the differential diagnosis of a metastatic tumor of unknown origin by fine needle aspiration cytology due to the significant morphologic overlap of poorly differentiated malignancies. We emphasize that, albeit rare, malignant melanomas can be completely negative for S-100 protein and the use of additional melanocytic-associated markers in the differential workup maybe critical in arriving promptly at a proper diagnosis. We also briefly discuss other currently available immunohistochemical markers that can assist in the identification of the S-100 negative melanoma.

scholarly journals Malignant Melanoma Presenting as a Parotid Mass in a Middle-aged Woman with Metastasis to the Breast

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Fereshteh Ameli ◽  
Dorsa Ghasemi ◽  
Vahid Soleimani ◽  
Amirmohsen Jalaeefar
Keyword(s):  
Malignant Melanoma ◽  
Parotid Gland ◽  
Correct Diagnosis ◽  
Short Interval ◽  
Neck Region ◽  
Primary Breast Tumor ◽  
Immune Reactivity ◽  
Nerve Sheath Tumor ◽  
Malignant Melanomas ◽  
Aged Woman

Introduction: Malignant melanomas of the parotid gland are relatively uncommon and usually seen as metastases from cutaneous or mucous sites of the head and neck region. Some malignant melanomas may metastasize before they regress. Therefore, identifying the primary origin of metastatic melanoma is sometimes difficult. Furthermore, metastasis to the breast from an extramammary site is uncommon and challenging. It may present as a well-defined rounded mass that histopathologically mimics the various architecture and cellular phenotypes. In addition, the immunohistochemical stains of some metastatic melanomas are equivocal and challenging. Case Presentation: We presented a case of parotid gland malignant melanoma in a 42-year-old woman with metastasis to the breast in a short interval. Biopsy of parotid and breast lesions showed loss of immune-reactivity for several melanoma markers and was initially considered as malignant peripheral nerve sheath tumor and primary breast tumor, respectively. Conclusions: This case highlights the importance of obtaining past clinical history in surgical pathology cases to make a correct diagnosis. It also enhances our understanding regarding malignant melanoma as a mysterious tumor with various morphology and immunophenotype.

Metastatic Malignant Melanoma of the Inguinal Lymph Node with Unknown Primary Lesion: A Case Report

2017 ◽  
Vol 3 (2) ◽  
pp. 13
Author(s):  
Guddi Rani Singh ◽  
Jiut Ram Keshari ◽  
Bhim Ram ◽  
Vijayanand choudhary ◽  
Ravi Bhushan Raman
Keyword(s):  
Case Report ◽  
Lymph Node ◽  
Malignant Melanoma ◽  
Inguinal Lymph Node ◽  
Metastatic Malignant Melanoma ◽  
Primary Lesion ◽  
Unknown Primary

scholarly journals Case report of vaginal melanoma

2016 ◽  
Author(s):  
Inderjit Kaur ◽  
Swarupa Mitra ◽  
Manoj Kumar Sharma ◽  
Upasna Saxena ◽  
Parveen Ahlawat ◽  
...  
Keyword(s):  
Malignant Melanoma ◽  
Soft Tissue ◽  
Invasive Carcinoma ◽  
Positive Margin ◽  
Vaginal Wall ◽  
Anterior Vaginal Wall ◽  
Full Thickness ◽  
Vaginal Cuff ◽  
S 100 ◽  
Hmb 45

Primary malignant melanoma of vagina is a rare disease with a predilection for local recurrence, distant metastasis and short survival time. Due to the low incidence and lack of reporting in the literature, treatment choices still remain controversial. We describe 2 cases of vaginal malignant melanoma. A 42 yr old female presented with complaints of post coital and per vaginal bleed of 1 month duration. Examination findings show growth 6 cm x 6 cm on anterior vaginal wall, another 3 x 3 cm lesion on right lateral vaginal wall. Vaginal biopsy showed malignant melanoma, S-100 and HMB-45 positive while negative for CK and LCA. MRI Whole abdomen showed altered lesion [3.8cm (AP), 6.0cm (TR) and 4.9cm (CC)] in upper 2/3rd of vagina extending into vaginal fornices and abutting right lower cervix superiorly, right paravaginal extension and mesorectal fascia. No significant enlarged lymph nodes were seen. In view of localised disease she underwent Type III Radical hysterectomy with bilateral salpingo-ophorectomy with bilateral pelvic lymphnode dissection with total vaginectomy. Histopathology s/o 2 tumour nodules, one located in the anterior vaginal cuff measuring – 5 x 5 x 3.2 cm, another located in right lateral vaginal cuff measuring 2.5 x 3 x 1.5 cm, malignant melanoma with involvement of the cervix with full thickness stromal invasion (2.8/2.8 cm,) invading perivaginal soft tissue, distance of invasive carcinoma from closest stromal margin <0.1cm (12 O’ clock), LVI, PNI – not seen, all pelvic LN free (0/25). In view of positive margin and full thickness stromal involvement, she received radiotherapy to pelvis and Inguinal region to a dose of 45 Gy/25# followed by a boost of 16 Gy/8# to the tumour bed till 01/01/16. Another case is a 40 yrs female, presented with complaints of bloody discharge per vaginum of 4 months duration. On examination, there was a large growth occupying the vagina till introitus. Cervix normal, para free. MRI Pelvis showed altered lesion involving left lateral uterine cervix and upper 2/3rd of vagina with full thickness stromal involvement with mild left parametrial, anterior and posterior paravaginal extension, measuring 2.9 x 4.5 x 5.3 cm. Few subcmlymphnodes were seen in bilateral external and internal iliac regions (L>R). Vaginal Biopsy was suggestive of Malignant Melanoma, expressing S-100, HMB 45 and SDX-10. Metastatic work up was negative. She underwent RH with total vaginectomy with bilateral PLND with RPLND. HPR showed exophytic black growth seen involving all quadrants of vagina, extending upwards into both lips of cervix – 7 x 6 x 2.5 cm, Malignant melanoma, distance of invasive carcinoma from closest margin: <0.1 cm (paravaginal soft tissue), 3/8 right Pelvic LN, ECE +, 01/9 Left pelvic LN, ECE absent, 0/6 Right common iliac LN, 0/1 Reperitoneal LN was seen. She received adjuvant radiotherapy to a dose of 50 Gy/25# to the pelvis and inguinals→ boost of 6 Gy/3# to nodal regions showing ECE & 10 Gy/5# to the primary region.

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