传统观点将恶性肿瘤视为机体细胞的异常增生，然而整合基因组学、蛋白质组学与免疫组学的前沿证据表明，进展期肿瘤已超越简单的细胞变异范畴，形成了具有高度组织复杂性的"新生器官"。本文基于肿瘤核心功能获得理论，系统论证肿瘤通过基因组不稳定性驱动表型演化，借助蛋白质网络重构实现代谢重编程，通过主动塑造免疫微环境建立免疫逃避，并寻求神经接触浸润以获取增殖信号。肿瘤不仅诱导周围细胞异化形成支持性基质，更以"组团式"方式构建三维生态位。在此理论基础上，本文进一步提出前瞻性预测：该"新型生物个体"在形态上将趋向极简功能结构，在能力上获得代谢自主性与免疫伪装，并在特定条件下具备脱离原宿主体、形成传染性谱系的可能，肿瘤的演化本质上是多细胞生命在体内的"二次成体"尝试。

Conventional views regard malignant tumors simply as abnormal proliferations of somatic cells.However, cutting-edge evidence integrating genomics, proteomics, and immunology indicates that advanced tumors have transcended the realm of simple cellular aberrations, evolving into "neo-organs" with a high degree of histological complexity.Based on the theory of core functional acquisitions in cancer, this article systematically argues that tumors, driven by genomic instability, undergo phenotypic evolution, achieve metabolic reprogramming through the remodeling of protein interaction networks, establish immune evasion by actively sculpting the immune microenvironment, and seek neural contact and invasion to obtain proliferative signals.Tumors not only induce the alteration of surrounding cells to form a supportive stroma but also construct three-dimensional niches in a "cooperative cluster" manner.Building upon this theoretical framework, this paper further proposes forward-looking predictions: this "novel biological entity" will tend towards minimal functional structures in morphology, achieve metabolic autonomy and immune camouflage in its capabilities, and, under specific conditions, possess the potential to detach from the original host and form transmissible lineages.In essence, tumor evolution represents an attempt at "secondary organismal formation" by multicellular life within the host.