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Endo T, Katsuno H, Kikuchi K, Ochi T, Matsuo K, Suzuki K, Yasuoka H, Nakano Y, Nakagawa M, Kuroda M, Morise Z. Intravascular papillary endothelial hyperplasia in the cecum: a case report. Surg Case Rep 2022; 8:179. [PMID: 36155876 PMCID: PMC9510079 DOI: 10.1186/s40792-022-01512-8] [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: 05/26/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022] Open
Abstract
Background Intravascular papillary endothelial hyperplasia (IPEH), also known as Masson's tumor, is a benign, non-neoplastic vascular lesion that is characterized by reactive proliferation of papillary endothelial cells associated with a thrombus. These lesions typically develop in the vascular regions of the head and neck, oral cavity, or extremities; however, other organ systems have been affected. IPEH in the gastrointestinal tract is rare, with only a few cases reported to date. Thus, the pathogenesis and clinical features of IPEH in the gastrointestinal tract are not entirely understood. Moreover, the local excision of certain subtypes of IPEH can be curative; this makes timely diagnosis essential. We present the case of a patient with IPEH in the cecum that was discovered while investigating the cause of severe anemia. Case presentation A 29-year-old woman visited a general practitioner (GP) with the complaint of abdominal pain. She was diagnosed with acute appendicitis and was prescribed antibiotics. After treatment, her abdominal pain disappeared. However, she was found to be severely anemic (hemoglobin level, 6.5 g/dl). To determine the cause of her anemia, the GP referred her to our hospital for further examination and treatment. Computed tomography scan revealed cecal wall thickening. Further, a lower gastrointestinal endoscopy revealed a 2-cm raised mass-like lesion in the cecum. This lesion was pathologically identified as an inflammatory granuloma. The cause of her anemia was determined to be bleeding from the lesion in the cecum. She underwent laparoscopic ileocecal resection. Histopathological examination of the surgical specimen revealed a spongy structure comprising many small papillary fibrous tissues lined by a typical monolayer endothelium. Further, immunohistochemical analysis showed that the cells of the endothelium monolayer expressed CD31, CD34. The Ki-67 labeling index was < 1%. Based on these findings, the lesion was identified as an IPEH in the cecum. The patient’s postoperative course was uneventful, and there was no evidence of recurrence during the 1.3 years of follow-up. Conclusions IPEH rarely arises within the abdominal cavity. Surgery remains the only treatment for IPEH and is associated with an excellent prognosis and a low recurrence rate. More aggressive lesions such as angiosarcoma should be excluded when considering the histologic diagnoses of IPEH, and expert pathologic review is vital. This is the first report of IPEH occurring in the cecum and represents a novel cause of gastrointestinal bleeding which the clinician should consider when evaluating a patient with atypical or difficult gastrointestinal bleeding sources.
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Lilis L, Wood F, Dickerson D. Scrotal Masson's tumour masquerading as dysplastic polyorchidism - a case report. JRSM Open 2022; 13:20542704221095371. [PMID: 35495367 PMCID: PMC9052235 DOI: 10.1177/20542704221095371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
This case describes a rare genitourinary presentation of a Masson's tumour, preoperatively assumed to be a dysplastic third testis.
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Affiliation(s)
- Lydia Lilis
- Department of Urology, Weston General Hospital, University Hospital Bristol and Weston NHS Foundation Trust, London, UK of Great Britain and Northern Ireland
| | - Fergus Wood
- Department of Urology, Weston General Hospital, University Hospital Bristol and Weston NHS Foundation Trust, London, UK of Great Britain and Northern Ireland
| | - David Dickerson
- Department of Urology, Weston General Hospital, University Hospital Bristol and Weston NHS Foundation Trust, London, UK of Great Britain and Northern Ireland
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Pantanowitz L, Muc R, Spanger M, Sonnendecker H, McIntosh WA. Intravascular Papillary Endothelial Hyperplasia (Masson's Tumor) Manifesting as a Lateral Neck Mass. EAR, NOSE & THROAT JOURNAL 2019. [DOI: 10.1177/014556130007901012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Liron Pantanowitz
- Department of Anatomical Pathology, South African Institute for Medical Research
| | - Ronald Muc
- Department of Anatomical Pathology, South African Institute for Medical Research
| | | | - Hein Sonnendecker
- Department of Anatomical Pathology, Chris Hani Baragwanath Hospital and the South African Institute for Medical Research
| | - William A. McIntosh
- Department of Otorhino-laryngology, Johannesburg Teaching Hospitals (Dr. McIntosh) and the University of the Witwatersrand, Johannesburg, South Africa
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Essid MA, Bouzouita A, Blel A, Gharbi M, Chakroun M, Ben Miled A, Ayed H, Cherif M, Ben Slama MR, Derouiche A, Chebil M. Masson's tumor of the kidney: a case report. J Med Case Rep 2018; 12:376. [PMID: 30577814 PMCID: PMC6303989 DOI: 10.1186/s13256-018-1898-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/26/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Intravascular papillary endothelial hyperplasia (known also as Masson's tumor) is a benign vascular lesion that commonly occurs in the skin and is rarely found in solid organs, especially in the kidney. In what follows, we will look into the first case of an unexpectedly diagnosed Masson's tumor of the kidney presenting as a suspicious renal cyst. CASE PRESENTATION A 61-year-old Arab man presented with a left renal cyst, incidentally revealed by ultrasonography. The laboratory values were unremarkable. Computed tomography and magnetic resonance imaging demonstrated a 38 mm left renal midportion Bosniak IV cyst. Our patient underwent a radical nephrectomy. Histopathology revealed the diagnosis of intravascular papillary endothelial hyperplasia. There was no recurrence detected after 9 years of follow-up. CONCLUSIONS Renal intravascular papillary endothelial hyperplasia is a rare benign tumor which can mimic a suspicious renal mass on radiological findings. Thus, this entity should be considered more often in the thick of the diagnostic possibilities in order to avoid unnecessary nephrectomies.
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Affiliation(s)
- Mohamed Ali Essid
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia.
| | - Abderrazak Bouzouita
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Ahlem Blel
- Department of Pathology, Charles Nicolle University Hospital of Tunis, Tunis, Tunisia
| | - Maroua Gharbi
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Marouen Chakroun
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Aycha Ben Miled
- Department of Radiology, Charles Nicolle University Hospital of Tunis, Tunis, Tunisia
| | - Haroun Ayed
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Mohamed Cherif
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Mohamed Riadh Ben Slama
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Amine Derouiche
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
| | - Mohamed Chebil
- Department of Urology, Charles Nicolle University Hospital of Tunis, Boulevard du 9 Avril 1938, 1006, Tunis, Tunisia
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Intravascular Papillary Endothelial Hyperplasia of the Jejunum as a Cause of Obscure-Overt Gastrointestinal Bleeding. ACG Case Rep J 2017; 4:e80. [PMID: 28670594 PMCID: PMC5482909 DOI: 10.14309/crj.2017.80] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/04/2017] [Indexed: 12/20/2022] Open
Abstract
Intravascular papillary endothelial hyperplasia (IPEH), or Masson’s tumor, is a rare, benign vascular lesion characterized by reactive endothelial proliferation with venous stasis and thrombus. Lesions typically arise in vascular regions of the head and neck or extremities, but involvement of other organ systems has been reported. Clinically, IPEH mimics other benign lesions (hemangiomas) and malignant neoplasms (angiosarcoma) depending on the affected site. Diagnosis is essential because local excision of certain IPEH subtypes is curative. IPEH in the gastrointestinal tract is rare with few reported cases. We present a case of obscure-overt gastrointestinal bleeding from IPEH of the jejunum.
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Alkan E, Sağlıcan Y, Özkanlı AO, Balbay MD. The first recurrent intravascular papillary endothelial hyperplasia (Masson's tumor) of the kidney. Turk J Urol 2016; 42:202-5. [PMID: 27635297 DOI: 10.5152/tud.2016.43789] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intravascular papillary endothelial hyperplasia (IPEH, Masson's Tumor) of the kidney is an unusual, benign vascular lesion. A rare case of recurrent IPEH in the kidney was presented in this article. A 50-year-old male with a diagnosis of a suspicious mass in the left kidney was referred to our center for robotic partial nephrectomy. Robotic zero ischemia partial nephrectomy was performed due to the suspicion of a renal malignancy. On the basis of the histopathological results, the patient was diagnosed as IPEH. A urinary ultrasound was performed on the 3(rd) postoperative month and a hyper echoic solid lesion, which was in the same localization, was detected. Due to the previous atypical pathological result, computed tomography (CT) guided fine-needle aspiration biopsy from the left renal mass was performed but malignant cytology was not confirmed with this biopsy. On follow-up CT done 6 months later, a persistent suspicious left renal mass, measuring 40 × 30 cm in size was detected with no change in its dimensions and appearance. Additionally, magnetic resonance imaging (MRI) scan revealed a bone lesion of 15 × 10 mm in the left hip, which was not present on previous MRI/CT scans. In view of the solid masses in the left kidney, and left hip on CT and MRI scan suspicious for a probably metastatic renal neoplasm, left radical nephrectomy via a left subcostal transperitoneal incision was performed. The ultimate pathological report of the patient was also supported the diagnosis of Masson's tumor and any renal malignancy was not encountered The patient was discharged on the 4(th) postoperative day and has been followed up for 4 months without any problems. In this case, we discuss the clinical features, histopathological characteristics, and the management of Masson's tumor of the kidney in the light of the current literature.
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Affiliation(s)
- Erdal Alkan
- Clinic of Urology, Memorial Şişli Hospital, İstanbul, Turkey
| | - Yeşim Sağlıcan
- Department of Pathology, Acıbadem University School of Medicine, İstanbul, Turkey
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Mestiri S, Karoui M, Charachon A, Deux JF, Chaumette MT. Intravascular Papillary Endothelial Hyperplasia of the Jejunum. Int J Surg Pathol 2016; 15:192-5. [PMID: 17478781 DOI: 10.1177/1066896906295825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Intravascular papillary endothelial hyperplasia is considered to be an unusual form of thrombus organization that is marked by an excessive papillary endothelial proliferation. This lesion has the propensity to occur in the skin and the subcutis. Occurrence in the gastrointestinal tract is very rare. The authors report an exceptional case of a 20-year-old young woman with intravascular papillary endothelial hyperplasia in the jejunum. The patient was referred to the hospital with a 1-week history of melena. The lesion did not recur after surgery. Histopathological examination revealed a papillary endothelial hyperplasia with an underlying arteriovenous malformation.
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Affiliation(s)
- Sarra Mestiri
- AP-HP, Henri Mondor Hospital, Department of Pathology, Paris X University, France
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Mehta V, Ananthanarayanan V, Antic T, Krausz T, Milner J, Venkataraman G, Picken MM. Primary benign vascular tumors and tumorlike lesions of the kidney: a clinicopathologic analysis of 15 cases. Virchows Arch 2012; 461:669-76. [PMID: 23090628 DOI: 10.1007/s00428-012-1333-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 10/08/2012] [Accepted: 10/15/2012] [Indexed: 02/06/2023]
Abstract
Primary benign vascular lesions of the kidney are uncommonly encountered in routine surgical pathology practice. They can, however, mimic malignancy or be an incidental finding adjacent to a malignancy. Fifteen specimens harboring 16 primary benign renal lymphatic/vascular lesions were identified from our files from 1999 to 2011 and subjected to a detailed pathologic evaluation and clinicopathologic correlation. Clinical and demographic data were available for all the 15 cases. There were ten males and five female patients with age range of 33-74 years (mean 54 years). Lesions ranged from 0.5 cm to 40 cm (average, 6.6 cm). There were six arteriovenous malformations (AVMs), four hemangiomas, three anastomosing hemangiomas, two lymphangiomas, and one solid intravascular papillary endothelial hyperplasia (IPEH). Five AVMs were located in the kidney parenchyma and one in the pelviureteric system. Additional associated lesions ranged from renal stones to renal cell carcinoma in two cases (one lymphangioma and one AVM). One AVM was associated with a capillary hemangioma in the vicinity, and another with a history of renal cell carcinoma in the contralateral kidney. Capillary hemangiomas and lymphangiomas were noninfiltrative and lacked cytological atypia and mitotic activity. Except for a renal pelvic AVM, all other renal AVMs radiologically mimicked malignancy. The patients had undergone partial or radical nephrectomies except for the renal pelvic AVM which was laparoscopically excised. To the best of our knowledge, none of the cases had any syndromic/systemic associations. Benign vascular lesions of the kidney are rarely seen in routine surgical pathology practice, partly because a vast majority of them are medically treated by embolization. However, lesions mimicking renal malignancy are subjected to surgery. They may exist as isolated lesions or coexist with malignant lesions either in the ipsilateral or the contralateral kidney.
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Affiliation(s)
- Vikas Mehta
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
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Lysyy O, Schwartz I, Kolander Y, Strauss S. Sonographic features of intravascular papillary endothelial hyperplasia (Masson's tumor) in the forearm. JOURNAL OF CLINICAL ULTRASOUND : JCU 2011; 39:301-303. [PMID: 21547933 DOI: 10.1002/jcu.20760] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Accepted: 08/30/2010] [Indexed: 05/30/2023]
Abstract
Intravascular papillary endothelial hyperplasia, also known as Masson's tumor, is a benign, vascular lesion in which there is papillary proliferation of endothelial cells. The lesion presents as a palpable soft-tissue mass, often located within normal or dilated vascular spaces, and may be mistaken for a sarcomatous tumor on imaging. We present the case of an intravascular papillary endothelial hyperplasia in the forearm, with a remarkable appearance on color Doppler sonography, and suggest that this entity will be encountered more frequently by sonologists in the future.
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Affiliation(s)
- Oleg Lysyy
- Department of Diagnostic Imaging Assaf Harofeh Medical Center, Zerifin, Israel, affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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10
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Pelosi G, Sonzogni A, Viale G. Intravascular Papillary Endothelial Hyperplasia of the Renal Vein. Int J Surg Pathol 2009; 19:518-20. [DOI: 10.1177/1066896909341800] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Intravascular papillary endothelial hyperplasia (IPEH) is a benign, florid proliferation of endothelial cells forming hyaline papillae covered by monolayered cells, which has rarely been described in the renal vein, most often being equated to tumors because of the difficulties in correctly interpreting imaging findings and accordingly treated by nephrectomy. If the kidney is end-staged for preexisting medical diseases, the risk of overtreatment is obviously negligible, but overdiagnosing IPEH as an intravascular tumor, either benign or malignant, may be perilous for the patient because of the possible consequences on the clinical management.
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Affiliation(s)
- Giuseppe Pelosi
- Division of Pathology and Laboratory Medicine, European Institute of Oncology and University of Milan School of Medicine, Milan, Italy
| | - Angelica Sonzogni
- Division of Pathology and Laboratory Medicine, European Institute of Oncology and University of Milan School of Medicine, Milan, Italy
| | - Giuseppe Viale
- Division of Pathology and Laboratory Medicine, European Institute of Oncology and University of Milan School of Medicine, Milan, Italy
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11
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Nassif AE, Pozzobon HJ, Azevedo ÉZ, Taguchi WS, Gomes RX. Hiperplasia endotelial papilífera de supra-renal: relato de caso. Rev Col Bras Cir 2009. [DOI: 10.1590/s0100-69912009000300018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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12
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Schwartz SA, Taljanovic MS, Harrigal CL, Graham AR, Smyth SH. Intravascular papillary endothelial hyperplasia: sonographic appearance with histopathologic correlation. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2008; 27:1651-1653. [PMID: 18946107 DOI: 10.7863/jum.2008.27.11.1651] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Stephanie A Schwartz
- Department of Radiology, University of Arizona Health Sciences Center, Tucson, AZ 85724-5067 USA.
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13
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Yokoi Y, Harada T, Hirayama K, Miura K, Mitsuhashi H, Toriyama H, Koyano K. Papillary endothelial hyperplasia of the liver: a case report and review of the literature. Dig Dis Sci 2007; 52:2633-7. [PMID: 17410431 DOI: 10.1007/s10620-007-9776-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Accepted: 01/18/2007] [Indexed: 12/09/2022]
Affiliation(s)
- Yoshihiro Yokoi
- Department of Surgery, Social Insurance Hamamatsu Hospital, 1-8-1 Nakajima, Hamamatsu, Shizuoka, 430-0856, Japan.
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Akhtar M, Aslam M, Al-Mana H, Bamefleh H, Al-Khateeb SS, Lindstedt E. Intravascular papillary endothelial hyperplasia of renal vein: report of 2 cases. Arch Pathol Lab Med 2005; 129:516-9. [PMID: 15794677 DOI: 10.5858/2005-129-516-ipehor] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Intravascular papillary endothelial hyperplasia is a benign intravascular process thought to arise from an organizing thrombus. The lesion may present clinically as an abnormal mass and, depending on the location, may be confused with benign or malignant neoplasms. It has been described in a variety of locations. Involvement of the renal vein by papillary endothelial hyperplasia is extremely rare, with only 4 cases reported in the literature. We describe 2 additional cases. In both cases, the radiologic examination revealed a well-circumscribed mass in the hilar region of the kidney, which was considered to be a renal neoplasm. Nephrectomy specimen in each case revealed characteristic features of intravascular papillary endothelial hyperplasia. It is suggested that intravascular papillary endothelial hyperplasia should be included in the differential diagnosis of a hilar renal mass.
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Affiliation(s)
- Mohammed Akhtar
- Section of Anatomic Pathology, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital, Riyadh, Saudi Arabia.
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Nishimoto K, Takaki M, Hirase H, Matsune S, Kurono Y. Extravascular papillary endothelial hyperplasia arising from parapharyngeal space. Auris Nasus Larynx 2004; 31:305-8. [PMID: 15364369 DOI: 10.1016/j.anl.2004.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2003] [Accepted: 05/21/2004] [Indexed: 10/26/2022]
Abstract
A 66-year-old man visited our clinic suffering from swelling of right pharyngeal space. He was not aware of other symptoms. The contrast CT showed patchy enhancement with calcification. The enhanced MRI revealed a non-homogeneous signal pattern and patchy central enhancement. During surgery, egg-shaped hard elastic tumor was observed in parapharyngeal space without any sign indicating an invasion into surrounding nerves or feeding vessels. Then the tumor was removed without significant hemorrhage or damage to the cranial nerve. Histological examination of the tumor revealed a nodular lesion with blood clot and hematoma encapsulated with fibrous tissue having vascular spaces of irregular shape and size. From those findings, the tumor was diagnosed as papillary endothelial hyperplasia (PEH). However, since the location of the tumor differed from that of PEH commonly observed in the intravascular space, the tumor was classified as extravascular PEH.
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Affiliation(s)
- Kengo Nishimoto
- Department of Otolaryngology, Faculty of Medicine, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
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Johraku A, Miyanaga N, Sekido N, Ikeda H, Michishita N, Saida Y, Fujiwara M, Noguchi M, Shimazui T, Akaza H. A case of intravascular papillary endothelial hyperplasia (Masson's tumor) arising from renal sinus. Jpn J Clin Oncol 1997; 27:433-6. [PMID: 9438009 DOI: 10.1093/jjco/27.6.434] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A 55-year-old woman had a right renal tumor incidentally diagnosed by ultrasonography. CT revealed a perirenal low density mass 3 cm in diameter. Dynamic CT showed peripheral enhancement of the tumor in early phase and internal homogeneous enhancement in delayed phase. Since hemangioma was considered most likely, we performed tumor resection and spared the right kidney. The tumor was supplied by the superior ureteral artery from the right main renal artery which was considered to be derived from the renal sinus. The tumor was diagnosed as intravascular papillary endothelial hyperplasia (Masson's tumor). This is the first report of intravascular papillary endothelial hyperplasia existing in the perirenal space. Although preoperative diagnosis of intravascular papillary endothelial hyperplasia is difficult, intra-operative pathology and kidney-sparing treatment should be considered in such a case.
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Affiliation(s)
- A Johraku
- Department of Urology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
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Abstract
Intravascular papillary endothelial hyperplasia (IPEH) is a benign endothelial proliferation of unclear pathogenesis, usually associated with thrombus as an unusual mode of organization and occasionally coexisting with vascular neoplasms. A 65-year-old white woman with chronic renal disease caused by focal segmental glomerulosclerosis experienced the failure of a cadaveric renal allograft 10 days after implantation. Pathological manifestations in the resected graft included total infarction and thrombi in both the renal artery and vein, the latter of which showed typical histopathologic features of IPEH. Papillary formations with fibrinous cores lined by bland endothelial cells surrounded fresh and organizing thrombus, and the proliferation had a highly cellular peripheral zone not readily recognizable as vascular. Immunohistochemical stains for factor VIII, CD34, and in particular CD31, however, confirmed the nature of both the papillary and solid areas of the proliferation as vascular endothelium. We present the first report of this lesion in an allograft vessel, and we find its rapid development, in association with a thrombus of clinically discernable age, to be strong evidence supporting the hypothesis that IPEH represents an uncommon morphology of organizing thrombus.
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Affiliation(s)
- C H Steffee
- Department of Pathology, Bowman Gray School of Medicine, Winston-Salem, NC 27157, USA
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Affiliation(s)
- A B Paul
- Department of Surgery, Dunfermline and West Fife Hospital
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Sandhu DP, Osborn DE, Munson KW. Relationship of azoospermia to inguinal surgery. INTERNATIONAL JOURNAL OF ANDROLOGY 1992; 15:504-6. [PMID: 1483740 DOI: 10.1111/j.1365-2605.1992.tb01144.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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