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Wang L, Leng B, Liu L. Angiomyolipoma of the Nasal Cavity: A Distinct Entity. A Case Report and Literature Review. Head Neck Pathol 2020; 15:709-714. [PMID: 32939743 PMCID: PMC8134609 DOI: 10.1007/s12105-020-01224-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/05/2020] [Accepted: 09/05/2020] [Indexed: 12/27/2022]
Abstract
Angiomyolipoma (AML) is a mesenchymal tumor commonly found in the kidneys. Extra-renal AML is uncommon and especially rare in the nasal cavity. To our knowledge, fewer than five cases of nasal AML are reported in the United States. We present a case of nasal AML in a 65-year-old man with a history of rhinosinusitis and obstruction of the left nasal cavity. The lesion comprised of admixed spindled smooth muscle cells, mature adipose tissue, and thick-walled blood vessels. Smooth muscle differentiation of the spindled cells was confirmed by expression of smooth muscle actin. Surprisingly, melanocytic markers, such as HMB45, were negative. The histologic features and immunoprofile suggest that nasal AML is pathologically distinct from neoplastic AMLs/perivascular epithelioid cell tumors (PEComas) that typically occur in the kidney. We propose that nasal AML is a hamartomatous lesion rather than neoplastic. Although AML is rare in the nasal cavity, it should be considered in the differential diagnosis of clinically benign nasal masses.
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Affiliation(s)
- Liping Wang
- Department of Pathology, Baylor Scott and White Health, 2401 S 31st St, Temple, TX USA
| | - Bing Leng
- Department of Pathology, Baylor Scott and White Health, 2401 S 31st St, Temple, TX USA
| | - Lina Liu
- Department of Pathology, Baylor Scott and White Health, 2401 S 31st St, Temple, TX USA
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2
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Tekkeşin MS, Chiosea SI, Ozolek JA. Hamartoma of the Oral Cavity with Ectopic Meningothelial Elements in Infants: A Rare Entity with Report of Two Cases. Head Neck Pathol 2019; 14:268-271. [PMID: 30840224 PMCID: PMC7021848 DOI: 10.1007/s12105-019-01024-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/15/2019] [Indexed: 12/13/2022]
Abstract
Choristomas and hamartomas within the oral cavity are relatively uncommon lesions and may present with diverse clinical and histopathological appearances. In this report, we describe two infant patients with hamartoma with ectopic meningothelial elements involving tongue and maxillary alveolar ridge. To the best of our knowledge, these are the first two cases in which a meningothelial proliferation has been identified in the oral cavity. Hamartoma with ectopic meningothelial elements is a rare condition that has been classically described occurring in the scalp. These lesions are characterized by bland round to spindle-shape cells that interdigitate through collagen bundles and express progesterone receptor and epithelial membrane antigen by immunohistochemistry supporting a meningothelial origin.
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Affiliation(s)
- Merva Soluk Tekkeşin
- grid.9601.e0000 0001 2166 6619Department of Tumour Pathology, Institute of Oncology, Istanbul University, Istanbul, Turkey
| | - Simion I. Chiosea
- grid.412689.00000 0001 0650 7433Department of Pathology, Presbyterian Hospital, University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, PA 15261 USA
| | - John A. Ozolek
- grid.268154.c0000 0001 2156 6140Department of Pathology, Anatomy, and Laboratory Medicine, West Virginia University Robert C. Byrd Health Sciences Center, 2132 HSC-N, P.O. Box 9203, Morgantown, WV 26506-9203 USA
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3
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Kim HJ, Chung CM, Park JY, Jung SG. Angiomyolipoma of the Glabellar Region. Arch Craniofac Surg 2017; 18:202-206. [PMID: 29090203 PMCID: PMC5647853 DOI: 10.7181/acfs.2017.18.3.202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 08/09/2017] [Accepted: 08/09/2017] [Indexed: 01/14/2023] Open
Abstract
Angiomyolipomas are hamartomatous lesions consisting of smooth muscle bundles, thick-walled blood vessels, and mature adipocytes. They are usually found in the kidneys of tuberous sclerosis patients and more rarely in other organs, such as the liver, the oral cavity, the sinonasal tract, the heart, the large intestines, the lungs, and the skin. Cutaneous angiomyolipoma has shown to be very rare and generally occurs at the ends of the digits, the elbows, the ears, and the nose. Herein, we report the first documented case of angiomyolipoma of the glabellar region.
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Affiliation(s)
- Hyo Joong Kim
- Department of Plastic and Reconstructive Surgery, National Medical Center, Seoul, Korea
| | - Chan Min Chung
- Department of Plastic and Reconstructive Surgery, National Medical Center, Seoul, Korea
| | - Jae Yeon Park
- Department of Plastic and Reconstructive Surgery, National Medical Center, Seoul, Korea
| | - Sung Gyun Jung
- Department of Plastic and Reconstructive Surgery, National Medical Center, Seoul, Korea
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4
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Morisaki T, Moritani S, Takenobu M, Kashu I, Koyama S, Fukuhara T, Kitano H, Takeuchi H. Angiomyolipoma at the base of the tongue: A type of mucocutaneous angiomyolipoma. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, MEDICINE, AND PATHOLOGY 2016. [DOI: 10.1016/j.ajoms.2016.05.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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5
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A case of angiomyolipoma of the lower lip. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, MEDICINE, AND PATHOLOGY 2014. [DOI: 10.1016/j.ajoms.2013.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Allon I, Allon DM, Hirshberg A, Shlomi B, Lifschitz-Mercer B, Kaplan I. Oral neurovascular hamartoma: a lesion searching for a name. J Oral Pathol Med 2011; 41:348-53. [DOI: 10.1111/j.1600-0714.2011.01101.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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A case of angiomyolipoma arising in the tongue. Case Rep Pathol 2011; 2011:698139. [PMID: 22937390 PMCID: PMC3420559 DOI: 10.1155/2011/698139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 09/25/2011] [Indexed: 11/27/2022] Open
Abstract
A 61-year-old woman was referred to our hospital with a mass in the left proglossis. The lesion was excised with a provisional diagnosis of hemangioma. The mass was well-demarcated and easily dissected with an ultrasonic surgical aspirator. The histopathologic diagnosis was angiomyolipoma arising in the tongue. There were no signs of recurrence at followup at 18 months.
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8
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A case of angiomyolipoma rarely located in the larynx. Case Rep Otolaryngol 2011; 2011:427074. [PMID: 22957284 PMCID: PMC3420772 DOI: 10.1155/2011/427074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2011] [Accepted: 08/08/2011] [Indexed: 11/17/2022] Open
Abstract
Angiomyolipoma is a rare benign mesenchymal tumor, which is mostly renal in origin. A sixty-year-old male patient with the diagnosis of angiomyolipoma located in the larynx has been presented here, and the literature is reviewed.
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9
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Pontes HAR, Pontes FSC, Cruz e Silva BT, Martel LPG, Carneiro JT, Silva BSDF, Pinto DDS. Angiomyolipomatous hamartoma of the upper lip: a rare case in an 8-month-old child and differential diagnosis. J Craniomaxillofac Surg 2010; 39:102-6. [PMID: 21067937 DOI: 10.1016/j.jcms.2010.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 07/16/2010] [Accepted: 10/04/2010] [Indexed: 11/25/2022] Open
Abstract
Hamartoma is a proliferation of normal tissues that are considered endogenous to the site of occurrence. In the head and neck region, hamartomas composed of other tissues different from blood and lymphatic vessels (hemangiomas and lymphangiomas) are very uncommon. We report an unusual case of upper lip angiomyolipomatous hamartoma in an 8-month-old patient. The patient underwent surgical treatment and the 1-year follow-up revealed no signs of recurrence. Angiomyolipomatous hamartoma is a very rare condition in the paediatric population group, especially in the head and neck region. It should be considered in the differential diagnosis of congenital lesions in childhood.
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Tosios KI, Koutlas IG, Kyriakopoulos VF, Balta M, Theologie-Lygidakis N, Vardas E, Iatrou I. Time to abandon the term angiomyolipoma for non-PEComatous angiomyomatous (or angiomatous) oral tumors with adipocytes. ACTA ACUST UNITED AC 2010; 110:492-7. [PMID: 20674420 DOI: 10.1016/j.tripleo.2010.04.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Revised: 04/21/2010] [Accepted: 04/23/2010] [Indexed: 12/01/2022]
Abstract
Angiomyolipoma (AML) is the most common benign mesenchymal neoplasm of the kidneys with well-established clinical and morphological features. The oral and maxillofacial pathology literature contains several examples that identify angiomyomatous proliferations of the oral mucosa that contain an adipocytic component as analogous to classic renal AMLs although they differ significantly in their immunohistochemical phenotype. Herein, through review of the pertinent oral pathology literature and the detailed description of 2 lesions, one an oral angiomyoma with an adipocytic component and the other an apparently hamartomatous angioleiomyomatous proliferation with adipocytes, we provide, in our opinion, a solid argument against the use of the term AML for non-PEComatous oral tumors.
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Affiliation(s)
- Konstantinos I Tosios
- Department of Oral Pathology and Surgery, Dental School, National and Kapodistrian University of Athens, Greece
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11
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Rosado P, Villalain L, De Vicente JC, Vivanco B, Torre A. Angiomyolipoma of the parotid gland: report of a case and review of the literature. J Oral Maxillofac Surg 2010; 68:2609-12. [PMID: 20598415 DOI: 10.1016/j.joms.2009.10.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 10/05/2009] [Accepted: 10/06/2009] [Indexed: 12/19/2022]
Affiliation(s)
- Pablo Rosado
- Department of Oral and Maxillofacial Surgery, Central University Hospital, Oviedo, Spain.
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12
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Koizumi H, Ishihama K, Enomoto A, Kogo M. Angiomyolipoma of the tongue. Br J Oral Maxillofac Surg 2008; 46:e3-4. [PMID: 17629380 DOI: 10.1016/j.bjoms.2007.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2007] [Indexed: 11/30/2022]
Abstract
We present a rare case of angiomyolipoma of the tongue in a 23-year-old man. The clinical appearance was of a small, solitary, well-demarcated, painless mass. The oral angiomyolipoma followed a benign course with no recurrence after excision.
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Affiliation(s)
- H Koizumi
- First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan.
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13
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Kreiger PA, Ernst LM, Elden LM, Kazahaya K, Alawi F, Russo PA. Hamartomatous Tongue Lesions in Children. Am J Surg Pathol 2007; 31:1186-90. [PMID: 17667541 DOI: 10.1097/pas.0b013e3180674dd7] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The incidence and spectrum of tongue lesions in children, in particular tongue hamartomas, is relatively unknown. We report a retrospective review of all tongue lesions seen at a major tertiary care children's hospital over an 18-year period with an emphasis on describing tongue hamartomas. A total of 135 tongue lesions were identified. Vascular/lymphatic lesions (36/135) were the most common followed by mucus extravasation phenomenon (22/135). Interestingly, hamartomatous lesions (18/135) were the third most common lesion category identified. Lingual hamartomas were predominantly submucosal in location and were classified histologically by tissue composition as follows: neurovascular (2/18), smooth muscle predominant (5/18), fat predominant (1/18), and smooth muscle and fat containing (10/18). All 5 smooth muscle predominant hamartomas also contained vasculature, and 1 case additionally contained salivary gland tissue. The single fat predominant hamartoma additionally contained vessels and salivary gland. The final 10 hamartomas contained varying amounts of both smooth muscle and fat, and also admixed combinations of vessels, nerves, and salivary glands. Two of these 10 cases additionally contained foci of choristomatous elements, including cutaneous adnexal structures and cartilage. Most patients with hamartomatous lesions were young, 2 years or less. Eight cases were congenital in origin. Females outnumbered males by 2:1. The majority of lesions (16/18) were dorsal in location, and 4 patients had a syndromic association, all oral-facial-digital syndrome.
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Affiliation(s)
- Portia A Kreiger
- Department of Pathology, The Children's Hospital of Philadelphia and University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
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14
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Stodulski D, Stankiewicz C, Rzepko R, Kowalska B. Angiomyolipoma of the larynx: case report. Eur Arch Otorhinolaryngol 2006; 264:89-92. [PMID: 17053927 DOI: 10.1007/s00405-006-0186-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2005] [Accepted: 01/27/2006] [Indexed: 10/24/2022]
Abstract
The authors present the report of the first ever case of angiomyolipoma arising in the larynx. The tumor was found in a 61-year-old man and was resected through laryngofissure. Histopathologic examination of the tumor revealed numerous smooth muscle cells, mature adipose tissue and numerous thin and large irregular vessels. Both histological and immunohistochemical findings were typical for tumors of the mucocutaneous angiomyolipoma group.
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Affiliation(s)
- Dominik Stodulski
- Department of Otolaryngology, Medical University of Gdansk, Ul. Debinki 7, Gdansk, 80-211, Poland.
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15
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Coscarón Blanco E, Gómez González JL, Blanco Pérez P, Cañizo Alvarez A, Benito González F, Flores Corral T. [Cervicothoracic angiomyolipoma: an unusual tumor located at a site difficult to reach for surgery]. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2005; 55:148-51. [PMID: 15253343 DOI: 10.1016/s0001-6519(04)78499-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Angiomyolipoma is an uncommon hamartomatous renal tumor very prone to spontaneous bleeding. However it is possible to find it in extrarenal sites, being the liver the most frequent one. The rest of sites recorded in literature are exceptional. In fact, to our knowledge, this is the first case reported of cervicothoracic settlement of an angiomyolipoma. This rare location, together with its marked tendency to bleed bleeding determinate a complicated diagnoses a difficult surgical approach.
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Affiliation(s)
- E Coscarón Blanco
- Servicio de Otorrinolaringología y patología cérvico-facial, Hospital Clínico Universitario de Salamanca
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16
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Jones AC, Trochesset D, Freedman PD. Intraoral benign mesenchymoma: a report of 10 cases and review of the literature. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2003; 95:67-76. [PMID: 12539029 DOI: 10.1067/moe.2003.52] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A benign mesenchymoma is an unencapsulated soft tissue neoplasm composed of 2 or more mature mesenchymal tissues not normally associated with each other, excluding fibrous connective tissue. No single mesenchymal tissue should predominate with respect to the other mesenchymal elements. Ten well-documented examples of intraoral benign mesenchymoma have been reported in the English language literature. The purpose of this report is to document 10 additional cases and to review the clinicopathologic characteristics of this uncommon tumor.
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Affiliation(s)
- Anne Cale Jones
- The University of Texas Health Science Center, Graduate School of Biomedical Sciences, San Antonio, Tex 78229-3900, USA.
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17
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Anderson AE, Yang X, Young RH. Epithelioid angiomyolipoma of the ovary: a case report and literature review. Int J Gynecol Pathol 2002; 21:69-73. [PMID: 11781527 DOI: 10.1097/00004347-200201000-00013] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Angiomyolipoma (AML) is a benign mesenchymal neoplasm that mainly occurs in the kidney either sporadically or in patients with tuberous sclerosis complex (TSC). Extrarenal AML is uncommon. We describe a 39-year-old female with a history of TSC and bilateral multicentric renal AML who presented with a persistent cystic ovarian mass that fluctuated in size during 2 years of ultrasonographic observation before its removal by salpingo-oophorectomy. The 4.5-cm mass was solid and cystic and tan-yellow. Microscopic examination showed an admixture of epithelioid cells, smooth muscle bundles, large thick-walled blood vessels, and mature adipose tissue. The epithelioid cells had abundant eosinophilic cytoplasm and many had bizarre atypical nuclei including multinucleated forms. Mitoses were rare. Typical smooth muscle cells and the epithelioid cells were strongly immunoreactive for HMB-45. To our knowledge, this represents the first report of an AML arising in the ovary. The differential with other oxyphilic tumors of the ovary is discussed.
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Affiliation(s)
- Ann E Anderson
- Department of Pathology, Long Island Jewish Medical Center, New Hyde Park, New York 11040, USA
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Banerjee SS, Eyden B, Trenholm PW, Sheikh MY, Wakamatsu K, Ancans J, Rosai J. Monotypic angiomyolipoma of the nasal cavity: a heretofore undescribed occurrence. Int J Surg Pathol 2001; 9:309-15. [PMID: 12574849 DOI: 10.1177/106689690100900410] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A monotypic angiomyolipoma of the nasal cavity in a 34-year-old woman is described. Tumor cells were spindled or epithelioid and contained glycogen and diastase-resistant PAS-positive granules. There were few mitoses, and necrosis was absent, indicating a benign tumor. The stroma was markedly vascular, and a few adipocytes were seen in one area. Cells were positive for melanocyte and muscle markers. Electron microscopy revealed abundant dense granules. Although melanin was absent histochemically, it was present using a chemical assay, and the granules may, therefore, be atypical melanosomes. Fine actin filaments, attachment plaques and lamina were present. Initial assessment of the lesion indicated malignant melanoma, but the immunostaining and histologic features indicated monotypic angiomyolipoma. To the best of our knowledge, this is the first such case in the nasal cavity.
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Affiliation(s)
- S S Banerjee
- Department of Histopathology, Christie Hospital NHS Trust, Manchester, UK
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Zavala-Pompa A, Folpe AL, Jimenez RE, Lim SD, Cohen C, Eble JN, Amin MB. Immunohistochemical study of microphthalmia transcription factor and tyrosinase in angiomyolipoma of the kidney, renal cell carcinoma, and renal and retroperitoneal sarcomas: comparative evaluation with traditional diagnostic markers. Am J Surg Pathol 2001; 25:65-70. [PMID: 11145253 DOI: 10.1097/00000478-200101000-00007] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Angiomyolipoma has a unique immunophenotype with co-expression of muscle-specific actin and melanocytic markers such as HMB-45 and Melan-A. The most recently developed melanocytic markers, microphthalmia transcription factor and tyrosinase, have not been studied in the diagnosis of angiomyolipoma. We tested 29 renal angiomyolipomas (21 classic histology, 4 epithelioid variants, 2 lipomatous variants, and 2 leiomyomatous variants) with an immunohistochemical panel, including microphthalmia transcription factor, tyrosinase, HMB-45, Melan-A, and muscle-specific actin. Results were compared with 15 renal cell carcinomas (9 conventional types, 6 with sarcomatoid change), 2 leiomyosarcomas, 5 liposarcomas, and 1 unclassified high-grade sarcoma. Microphthalmia transcription factor expression was seen in 22 of 29 angiomyolipomas, one renal cell carcinoma, and one well-differentiated liposarcoma (that is, 2 of 23 non-angiomyolipomas; sensitivity 75%, specificity 91%). Tyrosinase expression was seen in 4 of 29 angiomyolipomas and 0 of 23 non-angiomyolipomas (sensitivity 14%, specificity 100%). HMB-45 was positive in 24 of 29 angiomyolipomas and 0 of 23 non-angiomyolipomas (sensitivity 83%, specificity 100%). Melan-A was expressed by 25 of 29 angiomyolipomas and 0 of 23 non-angiomyolipomas (sensitivity 86%, specificity 100%). Muscle-specific actin was expressed by 29 of 29 angiomyolipomas and 2 of 23 non-angiomyolipomas (both leiomyosarcomas; sensitivity 100%, specificity 91% [100% excluding leiomyosarcomas]). Microphthalmia transcription factor showed the most widespread staining in angiomyolipoma (50% of cases staining more than half of the tumor cells) followed by Melan-A (24% of cases staining more than 50%). Only three cases showed positivity for all four melanocytic markers, while in one case each only microphthalmia transcription factor and Melan-A were positive. We conclude that microphthalmia transcription factor, but not tyrosinase immunostaining, has a sensitivity and specificity that rivals those of the established markers, HMB-45 and Melan-A, in the diagnosis of angiomyolipoma. Our data supports the use of a panel in difficult cases that includes antibodies to microphthalmia transcription factor, either Melan-A or HMB-45, and muscle-specific actin to provide the best mix of high sensitivity, high specificity, nuclear and cytoplasmic immunolocalization, and widespread staining of cells within a given tumor.
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Affiliation(s)
- A Zavala-Pompa
- Department of Pathology, Hospital de Especialidades #25, Instituto Mexicano del Seguro Social, Monterrey, Mexico
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20
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Foschini MP, Corti B, DaCol M, Cenzi M, Zanella F, Barbazza R. Angiomyolipoma of the parotid gland: a case report. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1999; 87:738-41. [PMID: 10397669 DOI: 10.1016/s1079-2104(99)70172-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Angiomyolipoma is a hamartomatous process that most frequently occurs as a single lesion or multiple foci in the kidneys of patients affected by tuberous sclerosis. Angiomyolipoma can also arise in extrarenal sites, among which the liver is the most frequently recorded. Only rare cases of angiomyolipoma located in the head and neck region (ear and oral and nasal cavity) have been described. The purpose of the present article is to report a case of angiomyolipoma of the parotid gland. A 68-year-old woman appeared for treatment with a slow-growing nodule located in her right parotid gland. Ultrasound examination revealed a heterogeneous nodule with well-defined margins. The nodule was surgically removed by total parotidectomy and showed the characteristic appearance of angiomyolipoma, with an admixture of fat smooth muscle cells, and tortuous, thick-walled blood vessels. Careful physical examination of the patient failed to reveal features of tuberous sclerosis. Angiomyolipoma should be considered in the differential diagnosis of mesenchymal lesions involving the salivary gland.
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Affiliation(s)
- M P Foschini
- Department of Oncology, Ospedale Bellaria, University of Bologna, Italy
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