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Focal nodular hyperplasia's most recognizable gross feature is a central stellate scar seen in 60–70% of cases. Microscopically, a lobular proliferation of bland-appearing hepatocytes with a bile ductular proliferation and malformed vessels within the fibrous scar is the most common pattern.
Focal nodular hyperplasia (FNH) is the second most common benign tumor of the liver. [2] FNH is found in 0.2%– 0.3% of adults worldwide. [2] FNH is more common in females (10:1 female to male ratio) except in Japan and China, in which there is a more equal prevalence of cases between females and males. [2]
Well-demarcated, nodular lesions ranging 2–5 mm in pulmonary parenchyma. Type II pneumocytes without nuclear atypia lined thickened alveolar septa and proliferated papillary structures. Enlarged cuboidal cells lining mildly thickened alveolar septa. [11] Enlarged cuboidal cells have abundant, eosinophilic cytoplasm and large, round nuclei. [12]
Nodular regenerative hyperplasia (NRH) is a rare liver disease, characterised by the growth of nodules within the liver, resulting in liver hyperplasia.While in many cases it is asymptomatic and thus goes undetected – or is only discovered incidentally while investigating some other medical condition – in some people it results in non-cirrhotic portal hypertension (NCPH).
[3] [4] The significance of making a specific diagnosis is that, unlike other benign liver tumors such as hemangioma and focal nodular hyperplasia, hepatic adenomas have a small but meaningful risk of progressing into a malignancy. [3]
Cutaneous lymphoid hyperplasia with nodular pattern, a condition of the skin characterized by a solitary or localized cluster of asymptomatic erythematous to violaceous papules or nodules [2]: 725 Cutaneous lymphoid hyperplasia with bandlike and perivascular patterns, a condition of the skin characterized by skin lesions that clinically ...
202.0 Nodular lymphoma; 202.1 Mycosis fungoides; 202.2 Sézary's disease; 202.3 Malignant histiocytosis; 202.4 Leukemic reticuloendotheliosis (commonly called hairy cell leukemia) 202.5 Letterer-Siwe disease; 202.6 Malignant mast cell tumors; 202.7 Peripheral T-cell lymphoma; 202.8 Other lymphomas; 202.9 Other and unspecified malignant ...
Mesothelial hyperplasia is a reactive, benign disease that has no chance of becoming cancerous and is linked to several acute and chronic mesothelial surface injuries. [ 1 ] Mesothelial hyperplasia is typically discovered by accident when examining peritoneal washings , ascites , or biopsy specimens taken during a laparotomy or laparoscopy .