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Lung squamous cell carcinoma producing both parathyroid hormone‐related peptide and granulocyte colony stimulating factor

1996; Wiley; Volume: 46; Issue: 5 Linguagem: Inglês

10.1111/j.1440-1827.1996.tb03624.x

1440-1827

Mutsuo Furlhata, Hiroshi Sonobe, Jun Iwata, Eiji Ido, Yuji Ohtsukl, Yasutomo Asahi, Ichiro Kubonishl, Isao Miyoshi,

Sarcoidosis and Beryllium Toxicity Research

An autopsy case of a 61 year old male with primary squamous call carcinoma of the lung with associated marked leukocytosls and hypercalcemla Is reported. High levels of serum parathyroid hormone‐related peptide (PTHrP) and granulocyte colony stimulating factor (GCSF) were detected. The tumor cells distinctly showed positive cytoplasmic knmunoreactions with anti‐PTHrP and anti‐GCSF antibodies. Marked granulocytosls and thin bony trabeculae lacking osteoblasts were observed in the vertebral bone. Calcium deposits were found In the proximal tubules of the kidneys. Infarcts were seen as a result of fibrin thrombosis of the splenic artery. The tumor was successfully transplanted into nude mice in which the high levels of serum PTHrP and GCSF were reproduced. These results indicate that the tumor simultaneously produced both PTHrP and GCSF causing the paraneoplastic syndromes of hypercalcemia and ieukocytosis.